Hi everyone! I hope you all are doing well. I was wondering if I may hear your thoughts on what might be wrong. My VFR was running well, but as the second owner of a 21-year-old bike with over 57K miles, I decided to give it a coolant flush. The old coolant that came out was still pretty clean, bright, and green. I also drained the engine block. I ran the bike with distilled water and after opening the water pump drain again the water came out clear. Nice, it appears the previous owner looked after the coolant. I then added fresh coolant. When I started the bike this time, I noticed the coolant temp. inching up and the engine getting hotter, but the radiators and hoses stayed COOL. At 220 F, the radiator fan did not kick on like it usually did. At 227 F, I immediately turned the bike off. The engine hot; both radiators and hoses still cold. I tried squeezing the hoses and snapping the throttle thinking it might be air trapped in the system, but nothing changed. I'm thinking maybe my thermostat is stuck CLOSED, which is preventing hot coolant in the block from reaching the radiators, which in turn is keeping the radiators cool, which in turn is preventing the radiator fan from turning on. That's just my guess. I believe the thermostat is original & has never been replaced! What does everyone think?? Sorry for the long post, and thank you all in advance for any advice.