I have a 1990 Stratos 201 pro duel console with a 1990 Johnson 200GT ....prop is a 4 blade renegade 21 pitch and is set at 3 3/4 " off pad with no jack plate.... it's running 50mph at 3/4 throttle and my rpms are 6200 ....so I picked up a 27 pitch Renegade 4 blade and now I'm running 45pmh wot at 4800 rpms.... what should I do for a prop as I've went from one extreme to the other