I do exactly what VooDoo says. Except sometime I get too aggressive with a butane flame after applying and it liquifies and drips. Buts it does even out the coats and removes bubble. Also, I seem to have the best luck with ProKote. I find FlexCoat temperamental, but maybe that's just me,From my experience, most bubble issues (once applied to rod/wrap) is when epoxy is applied to thick. Bubbles in cup are irrelevant. Air bubbles will want to escape on every thread wrap - its the nature of the beast. You need to let this happen & be patient - they will disappear on their own after a few minutes or a light pass with a good heat source will help (some type of torch is recommended here). The problem occurs when the epoxy is to thick for the bubbles to escape.
CP or NCP thread, it doesn't matter — ALWAYS apply 1-2 coats of color preserver.
That's easy enough to do lately.Color preserver is for preserving color. It's helping to reduce bubbles because it's forcing the air out of the thread, which you can do with finish and possibly save yourself a step.
If you need a torch, your ambient temp is too low in the first place. I haven't used one in years, although I do only work with finish once my shop temp is 80 or higher.