Got launched on Tuesday...Immediately noticed an over heating issue. Only had to motor a short distance from the ramp to the floats. Spent hours checking out possibilities. Finally removed the thermostat..... NOPE... So I closed up for the night. During the overnight I came up with 2 possible causes. The water heater was replaced off season. Air in the lines? So with a 50 cc irrigating syringe both loop lines to the heater were freed. I injected antifreeze in one line until it came out of the other...Hooked the lines back in place and started up.... VIOLA ! Ran cold as a mother -in-laws breathe ... Motored to step my mast with no or little movement of the temp gauge. Today I'll reinstall the thermostat, hang the boom and sails and who knows... maybe a shake down.. ~~(\_~~