After printing all those angles while testing the last angle, discovered that the adaptor holding the bottle was not holding it well enough such that it was wobbling. Thusly invalidating all my previous testing about which angle was the best angle.

Designed this like captive collar system to clamp onto both the bottle and the adaptor. It grabs every shape of the bottle it can, and also provides some reinforcement to the base that it did not need but now it has. Now this is not going anywhere.