So, I started it up yesterday afternoon. At idle, it backfired, something it had never done before. When I placed my hand on the exhaust cover and it shocked me, I thought the backfiring was because one of the coil wires was almost off the coil. That was some of it, but it still backfired some. I let the motor run on muffs for about 20 minutes. The port side seemed to heat up more than the starboard. Hotter but not hot. When I retorqued the head bolts, every one of them on the port side took a quarter turn or so. What do y'all think? Are the head bolts, the heating up, and the backfiring related? Might be a week or more before I can put it in the water.
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