Re: prop pitch difference
I don't know how the Spinelli will compare to the Raker, but to gues at it, I'd say the r's would drop "slightly", but that may change considerably if you can still raise the engine some, and I would recommend you try that first, then look into some props or possibly working the Raker.....adding bite to a prop vs. removing it will generally increase efficiency.<br /><br />EDIT: One item that becomes more clear to me every day is that any given prop can perform in such a wide array of levels, that it is really tough to tell just what that prop will do without being able to test it. Recommendations are going to be real close from guys like Dhadley, and he's had experience with about any prop made, but there are some variables that are just plain tough to guess vs. factual numbers of testing.