I overheated my motor this spring first time out. After that I changed thermostats, waterpump, and head gaskets. I believe I am still getting water in the bottom 2 cylinders. Could I have warped the block or should I get the heads planed. The cylinder walls and pistons look fine.<br />The boat still runs hot ( on the gauge) at low rpm but above 2200 or so the temp drops right down.<br />Any suggestions?