ok got a chance to do some testing on the servos.. running 1268 in my e-buggy with tekin rx8 and 1900kv motor.. had some minor glitching.. added a castle bec.. it is the 10 max output adjustable from 4.8-9.0 volts.. it is as default setting 5.1 volts.. tested for a full 4500 4s battery .. no glitches what so ever.. i will get the voltage to 6.6 or 7.4 volts in a week or so but as of now this took all the issues away.. castle # is 095-0022-00 i think they are 10-15 bucks.. .. hope this helps a few of you out.. jeremy