Just for fun, has anyone found an after market thermostat for the 650R that DOESN'T have to be modified? I am using the NAPA #115 thermostat, which seems to work great. it just sucks you have to drill a hole, and buff off a few thousands of an inch off the top to get it to fit in the housing. BTY, if anyone working at Honda reads this, FIX THE DAMN THERMOSTAT. The guide pin is too short, and it gets stuck open. Stop denying the problem and FIX IT!