Ray and Rodbolt thanks for your help on the yamaha. Though I would share what was found after the heads were taken off. The head cover gasket on the port side had a hole in it letting water bypass the thermostat. The star side had a partially plugged drain hole the reason it was hot. I noticed the cylinders on the cold side has some scatches on them. Was this caused from it runnimg cold on that side,the hot was ok. Thanks Mike
