Got a gorilla hull put on a 2012 bass cat puma mercury 250 pro xs and lost agood 10 mph, no bow lift, and max rpm 5600. Had 26 fury worked by RonnieGilbert and Toledo Fiberglass work to take out hook, gained liftand 3 mph increase. Has a 6 inch manual slidemaster,prop to pad 2.625,engine height to pad 25 7/8 inches, before the hullinstalled and was running 80 as I said now getting 73-74. I posted on anotherforum and it was recommended to have the plastic roller on the throttle onthe Mercury Proxs removed with the theory not opening the throat fullywill make the fuel run richer and give a little extra power. The boat will onlyturn 57-5800 presently I have some rpm's left on the table which need to get back. 1.) Is there any credence to removing that plasticroller to give more power to try to get those last 200 rpm 2.) Will placing an8 inch hydraulic plate on it, gaining 2 inches setback andleverage, and ability lift straight versus trim help get back speed and/orcapture those rpms back. Trying to lift more now at 5800 pm by trimming resultsin a tall rooster tail.
Compression checked (120 +/- 5), new plugs and plug wires, and mercury mastermechanic said she is putting out full power. Any other suggestions?