You can check the tilt assembly on the helm slave pump, check the end lock down caps on the hydraulic cylinder, look at the pivot saddle on the front mounting bolt there also. Then ultimately rebleed it? There is one last spot to check and that is end travel on the front cylinder saddle strap where it can move end to end. Our guess is that it is probably in all areas minutely and incrementally more when all lost tolerances are stacked together.