From what you said, I'm wondering if you are expecting the same heat up time each time you use on demand in sucession, 3 times? If I'm not misinterpreting you, then no. It wont be the same heat up time. After your first on demand hits....the second wont take as long because the device is already warmed up and doesnt need as long to heat up. And depending on how long you wait between each time you press on demand will vary how long you have to wait. It doesnt have a fixed/static time for heating each instance, it depends on the current temp and whatever it uses to check the temp - probably some sort of thermostat?
And yes, I have noticed this getting stuck sometimes on the 4th bar or so...its just heating up. I much prefer session though and have only used on demand a few times.
There are a couple vendors selling those stems w screens. Check 420edc and sneakypetes. There may be others, not sure.
Hope this helps.
The botl ONLY comes with an airport. It is not an option. He has a disclaimer on there explaining why.
Just like the Pill BotL for the Arizer Solo/Air Series but designed for the new Arizer Solo III. Clear borosilicate glassware with colored borosilicate spheresfor the Arizer Solo III. Featuring a larger chamber that can hold ≈ .5g of flowers, an ≈ 40% increase over the standard chamber as well...
www.420edc.com
In the 4th para after the header "DESCRIPTION" it starts out by stating "We will not make this piece without the airport..."