It is normal for that hull to lean some to port on planing.. It has a narrow beam. Try to bump the drive up just as you get on plane and turn the wheel a bit.. That helps. The 23Mirage will lay that hull over a bit. But it was the fastest prop I ever ran on the 251 hull. Well 23,25,27... But becarefull with hook in the bottom of that boat.. It needs a little to keep it flying level. I took all the hook out and ran into some handling problems..
If you want more info.. you can email me..

Good luck and enjoy that boat.. best hull Checkmate ever made!!
I had mine for 10yrs.

Dick