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She runs at 5200 when she is running light and things are going well, then sometimes she will start to run a bit rough and not go over 3500. At 5200 she is running 29 MPH. The engine is not mounted as high as some I have seen on this site. The top lip of the mounting bracket sits right on the transom top. It looks like the lower holes in the bracket don't have but one place to go maybe the guy who installed this motor drilled his own holes in the bracket. The upper holes can allow it to be raised a couple of inches but then the lower bolts would need to be redrilled to meet any other holes.
By the way, thanks to you guys who have answered, I appreciate your help and advise.