ORIGINAL: googledperson

Ok guys so heres the deal. I got a new aa jet about 3 weeks ago been pretty good to it no smashing it and what not. So anyways 2 days ago i try it and one motors not working. I think ***? and i give it a flick it works fine. Then today it doe it again but the motor is much slower now. I tried oil and compressed air. it seems as though the motor only powers the shaft when its in a certain position so the momentum of the power going through that position carries it through the "dead zone" but only when it doesnt start in the "dead zone" it leads to an overall slower motor. any ideas?