I recently purchased a 94 XP. The craft was submerged about 8 months ago and the seller drained the gas tank and oil reservor soon after it happened. Before purchasing I checked the compression onboth cylinders and read 150/145. I thought was good? I put it together and took it to a mechanic who rebuilt the carbs. The mechanic put the XP in a tank to test run. Prior to running he took a compression test and read 164/145. He ran the engine for a few minutes and said he was unable to keep it running without pulling the choke. He suppected that the compression had cratered. He did another test whilethe engine was warm this time he said 120/110. He now claims that the engine needs a rebuild at a cost of $2000 and has offered to buy the XP from me. Now this seems fishy to me. I picked up the XP today and did a compression test at home and it reads 150/145. I put some Marvel Mystery oil and let it set for a few hours and now I think my next test is the lake. Bases on the above storey do any of you thinks that this engine needs to be replaced?