how do i e-mail a question to hank johnston, the boat doctor on this site?? i have done it before, but now i don't see how i can?? i have a prop question!! thanks!! well why i am posting, let me ask you!! he says if you cup a prop, it will cut down the full throttle rpm's down by 150-300 rpm's! but, is that a 1 degree cup or what?? hope we have some prop guys on here?? thanks again!!