Ate some water got the ski to land and running 15 mins later but was a dog. Had no power. Compression is now 160 in each hole where it was 180 before. Front cyl has no carbon at all and piston looks steam cleaned, rear has carbon build up. No scoring and the pistons move freely. I had 3 tanks thru the motor, dual oem 38s,stock reeds, Ada head. O-rings did not look damaged but I am ordering new. Thoughts ???