Been having trouble with the Integy 55t Lathe Motor, Novak XRS ESC, and 12/96 gearing in my Wheely King. I'll be driving it and all of a sudden I loose power to the motor and sometimes also loose steering. I replaced the poorly installed Traxxas VXL plugs (I tried to install them while the ESC was still on the truck.....baaaaaaad idea) with Deans plugs and I still am having the problem, just not to the extent I was before. I was using 6-cell sub C cell packs ranging from 3300-5000mAh and have switched to recently to Great Planes 1100mAh 9.6 ni-cd pack with a GP 1800mAh 9.6v Ni-MH pack due to arrive at the store probably tomorrow and I've had problems with both styles of pack. Even though the XRS is rated for 6 cells and 15t, the ESC doesn't seem to get hot or have a problem with the 9.6v pack. I was having this problem with the factory brushes and endbell so I swapped a P-94 style endbell from the 13t Kobal I had in the Pede with out putting new springs and brushes (brushes were installed last spring and barely used, springs were factory to that SGP motor.) I did swap to a heavy spring for the lower brush but have yet to swap brushes as of yet.