Hello, my name is Mannie. Got a 1999 tigershark 640 ts. It had blown pistons so I did a top end rebuild with new rings, pistons and gaskets, etc.. Put everything back together to spec. Took it to the launch to start her up. Starts right up and isles but dies when throttled. Did a compression test. The non mag side has 120psi compression and mag side only 60psi. It also is getting water getting into motor somehow.. Figured I get some idea here. Thoughts??