This evening was my second ride on the bike and it was hot. The air temp was around 94 degrees and I was riding two up. During the first ride on Saturday it wasn't as hot and I rode single and had no overheating issues. Saturday was cooler around 85 to 88. Once the bike warmed up this evening it stayed all the way to the right on the H. We rode from 25 to 55 at under 5k rpm. The ride lasted about 45 minutes and when I got home a little of the coolant leaked under the bike from the overflow tank. Although the bike has only 3100 miles it still has a 31 year old thermostat. I replaced the original radiator temporarily until I have it welded (long story my FUBAR). When I had the radiator off, I cleaned the fan but it would not turn which I though odd. So, if you were me where would you start?