I did not notice if you described the color (colour) of your spent material: how dark are you taking it.? While it is not true for all strains, the closer the color is to dark chocolate brown, the more goodies you have inhaled. There are over 90 diff cannabinoids released at different temps. Maybe you are not getting it all.
120 cannabis phyto-cannabinoids found and identified now in 2017.... I'm sure there are more yet to be found... all phyto-cannabinoids have some type of Bio-mimetic or cannabimimetic effect on our adaptable cannabinoid receptors...key words- lipophilic compounds, signalling molecules, secondary metabolites, bioactive lipids, signal tranduction, G protein coupled receptors, peroxisome proliferator activated receptor(ppar)= nuclear receptors! intracellular messenger, extracellular bio accumulator
As to smoke to vape transition...
a vape that reaches temps over 400 degrees F is a must IMO... 400 F Plus heat range and a water bubbler to help smooth/condition higher heat vapor will extract and deliver those high heat compounds that people are used to when smoking the herb... with a vaporizer at low heat there tends to be a sativa like head high only that originates in the neck to head area.. getting that heat point to a more higher setting will extract harder to release actives that are sedating and calming for full body effects... unless a person has access to concentrates, only having access to flower requires those higher heats @ first... after your chemical tolerance is adjusted to vaporizing you can start heat tailoring the vapor experience to reach desired levels of medication and work with particular strains with heat too...
for example- I had a strain called Jack Frost that was the toughest to tear apart strain I've ever seen... there would have been lots of actives in that strain had I not put the high Heat to it and extracted the actives.. I think THCV is in that strain and it is a high heat release compound...
Edit
the science of heat released compounds in cannabis..........
Phytocannabinoids, their boiling points, and properties
?-9-tetrahydrocannabinol (THC)
Boiling point: 157*C / 314.6 degree Fahrenheit
Properties: Euphoriant, Analgesic, Antiinflammatory, Antioxidant, Antiemetic
cannabidiol (CBD)
Boiling point: 160-180*C / 320-356 degree Fahrenheit
Properties: Anxiolytic, Analgesic, Antipsychotic, Antiinflammatory, Antioxidant, Antispasmodic
Cannabinol (CBN)
Boiling point: 185*C / 365 degree Fahrenheit
Properties: Oxidation, breakdown, product, Sedative, Antibiotic
cannabichromene (CBC)
Boiling point: 220*C / 428 degree Fahrenheit
Properties: Antiinflammatory, Antibiotic, Antifungal
cannabigerol (CBG)
Boiling point: MP52
Properties: Antiinflammatory, Antibiotic, Antifungal
?-8-tetrahydrocannabinol (?-8-THC)
Boiling point: 175-178*C / 347-352.4 degree Fahrenheit
Properties: Resembles ?-9-THC, Less psychoactive, More stable Antiemetic
tetrahydrocannabivarin (THCV)
Boiling point: < 220*C / <428 degree Fahrenheit
Properties: Analgesic, Euphoriant
ß-caryophyllene
Boiling point: 119*C / 246.2 degree Fahrenheit
Properties: Antiinflammatory, Cytoprotective (gastric mucosa), Antimalarial
Terpenoid essential oils, their boiling points, and properties
ß-myrcene
Boiling point: 166-168*C / 330.8-334.4 degree Fahrenheit, Properties: Analgesic. Antiinflammatory, Antibiotic, Antimutagenic
d-limonene
Boiling point: 177*C / 350.6 degree Fahrenheit
Properties: Cannabinoid agonist?, Immune potentiator, Antidepressant, Antimutagenic
linalool
Boiling point: 198*C / 388.4 degree Fahrenheit
Properties: Sedative, Antidepressant, Anxiolytic, Immune potentiator
pulegone
Boiling point: 224*C / 435.2 degree Fahrenheit
Properties: Memory booster?, AChE inhibitor, Sedative, Antipyretic
1,8-cineole (eucalyptol)
Boiling point: 176*C / 348.8 degree Fahrenheit
Properties: AChE inhibitor, Increases cerebral, blood flow, Stimulant, Antibiotic, Antiviral, Antiinflammatory, Antinociceptive
a-pinene
Boiling point: 156*C / 312.8 degree Fahrenheit
Properties: Antiinflammatory, Bronchodilator, Stimulant, Antibiotic, Antineoplastic, AChE inhibitor
a-terpineol
Boiling point: 217-218*C / 422.6-424.4 degree Fahrenheit
Properties: Sedative, Antibiotic, AChE inhibitor, Antioxidant, Antimalarial
terpineol-4-ol
Boiling point: 209*C / 408.2 degree Fahrenheit
Properties: AChE inhibitor. Antibiotic
p-cymene
Boiling point: 177*C / 350.6 degree Fahrenheit
Properties: Antibiotic, Anticandidal, AChE inhibitor
Flavonoid and phytosterol components, their boiling points, and properties
apigenin
Boiling point: 178*C / 352.4 degree Fahrenheit
Properties: Anxiolytic, Antiinflammatory, Estrogenic
quercetin
Boiling point: 250*C / 482 degree Fahrenheit
Properties: Antioxidant, Antimutagenic, Antiviral, Antineoplastic
cannflavin A
Boiling point: 182*C / 359.6 degree Fahrenheit
Properties: COX inhibitor, LO inhibitor
ß-sitosterol
Boiling point: 134*C / 273.2 degree Fahrenheit
Properties: Antiinflammatory, 5-a-reductase, inhibitor