With TRI 4503 and red spring on the + And TRI 4499 on the - with a red spring, the Monster balances out. Also, make sure you are shimming the motor well within its magnetic center. Trinity sells a shim kit that gives you three basic sizes, aluminum as the thickest, black steel as the middle size, and brass for the thinest. Trinity ALSO offers teflon shims, when sandwiched between brass shims on each end of the armature, and lubed accordingly, make for a very free-spinning armature. If you need smaller sizes to make it right... BRP offers them in varying sizes to make it all work JUST right. Its a little time consuming, but the efficiency gained pays off all across the board.
- Dave