Anyone having servo problems with their Sport 2. I'm running a Spektrum 3100 RX and use DX3R TX. Put new RPM's on the front and worked them in Per Marvs recommendation. Thought things were too tight cause steering didn't want to center every time. Took Servo arm loose and Servo did same thing with no load. Changed to a Hitec 645 and things seemed better but at race today same thing started happening. Also noticed ESC was getting real warm on the side just working the servo. Do I need a BEC or a new ESC or????? I thought I read somewhere that the Spektrum RX's use a lot of power compared to others and this along with the added load of tighter steering may be the issue. I will try putting the HPI RX back in and see what happens.