maybe not 
with these motors i get a noticable but not loud high pitched static noise when engaging the thumbwheel slightly in either direction (where there is no noticable acceleration or braking actually happening)
performance wise i cant really tell if anything is wrong, acceleration is strong, but only ever so slightly stronger than the 6355 i ran before, and the power delivery is symetrical on both wheels
its a new phenomenon to me, is there actually something wrong or is that normal considering im running the same settings as before, just differend motors?