I originally had a Nickerson 1050 dom on top of a HP465 with a B&M250. Nothing but trouble for the first 2 yrs I owned it. Too rich, loaded up after 3 min of idleing, pure black transom befor could even get away from the dock. Sent it off to Bruce Dudley in St. Louis this spring. He boost referenced it and other changes as needed. A world of difference. Response like never before, and transom is clean as can be. I highly recommend him. He knows high performance motors.