09 Cougar - 2018 250 Pro XS Setup Question

[wadzilla]

I have a 2009 Cougar FTD, 8" Slidemaster, 26P Fury with standard 3 vent holes open.

I bought the boat new in 2011 with a 09 250 Pro XS and the boat was completely set up and ran great. I had it to 80 with lighter load and ran high 70's easily with normal load. It had decent hole shot and it didn't have any blow out.

I recently bought a new 2018 Pro XS (one of the last 2 strokes) with the torquemaster II. I kept the Fury 26P. Here is where I went wrong. I didn't record my setup dimensions before the engine was replaced. After the break in period I now am trying to get the setup back to where it should be. I have a really bad blow out as the boat plans off during the holeshot. I have to back way out of the throttle to get it to hookup but once it does and I am on pad it doesn't slip anymore. I have tried to turn sharp at a decent speed adn I get blowout there too.

It also seems to be maxing out in speed at about 72 and 5500 RPM's which to me seems counter intuitive to the blowout. I do know that the motor will continue to free up and performance will get better up to 50 hours but think this is a little low. I am at about 10 hours right now. (Blow out says lower the motor, RPM's say raise it???)

I have taken my time and gotten a good prop to pad measurement. I am 3" below pad. That seems to be enough not to get blowout from what I read and might should go up to start increasing rpms but I am not sure.

Does anyone have any suggestions or experience with this set-up.