Feigao 540 9L and Warrior 9918 Controller

[RC-Monster Mike]

Your heat transfer theory is unlikely, but your "blow hard" explanation is quite amusing. :) I guess we can take binding out of the equation. Have you run it with a receiver pack or using the controller's BEC vs. the UBEC? I hate to think the UBEC is a problem, but you and the other user in this post seem to be having similar issues and the UBEC seems to be the common link. There are MANY 9918 warriors out there and these two are the only ones I have heard of with this issue. I would like to get to the bottom of it (for the users sake, but also for my own sanity!).