Low Speed Low RPM

[TricksEnd]

Have a 2012 GTX-S 155. Ran fine when I winterized it last fall. Put it in the water in June and would only go 25mph at 5500 rpm. Had local shop check compression & leak down. Both fine. Not showing any codes and reading correct key. Looking for troubleshooting tips outside the box.

 

[skiasylum]

Something you did when you winterized it? Spark plugs, oil level, coils.

 

[TricksEnd]

I put new spark plugs in when I winterized it. When I put it in in the spring I changed the plugs again thinking that was the issue with no improvement. I also bought one new coil and swapped coils around thinking one of the coils might be bad.