If you are using the caps then you are filling the cap and not the chamber. Caps hold about 250 milligrams unless you really pack it tight. When you fill the cap don't pack it tight. The people who rave about the Crafty flavor are often low temp users. I start at 168c instead of the default 180c. I boost at 185c instead of the default 195c. I also use a concentrate pad to cover my load instead of using a cap and that might change the optimum temp for vapor so YMMV. The concentrate pad allows me to use a very small amount and still get good conduction. I suggest you try starting at lower temp maybe even 160c and raise the temp in small steps until you get some vapor and flavor. Also the Crafty has a very open draw and you can really get most of the goodies with a few powerful draws. Ease up a bit on your draw and focus on the flavor more than the vapor. With 70 milligrams I get 4-5 flavorful draws with some vapor at 168c. I boost to 185c and get another 4-5 draws with good vapor and some flavor. I do not draw as hard as I can because I have found that to be less satisfying for me. You will find over time that periodic cleaning will keep the flavor from falling off too. I replace and clean the concentrate pad more often than I need to clean the cooling unit. YMMV.