Feigao 540 9L and Warrior 9918 Controller

[HotnCold]

MadDog - first off - let me welcome you to the site.. I am sure that mike will address this when he gets on the forum ( i will call him and make sure he sees this thread - although i really dont need to, he never misses any post - which is good ) The high pitch whining noise if you are just barely touching the throttle is normal as is the jerking or back and forth motion when barely touching throttle. That is what patch described as cogging. As far as the back plate popping off - i havent heard of that. Im sure mike has a solution for that. Also - please make sure that the receiver batt (providing your using a rechargable) is fully charged. That has been a culprit of a bunch of probs for people in the beginning. Im sure this is an easy fix - Hang tite till mike responds to ya.. Once again welcome to the site - you will find a bunch of our members are very skilled and knowledgeable in this field ( brushless)....