I just bought a used 2010 Santa Cruz Bullit. It has a Rockshox Vivid with a 500 X 2.75 coil on it right now, but that is way too stiff for me (I think I need a 400, I am about 180lbs). Will a 400 X 3.0 fit the frame without any consequences? I guess what I am concerned about is the the stroke length, will the added 0.25 affect the frame or the shock itself?