Ok, I've got almost 1,000 miles on the bike, so I would think any air bubbles would be gone by now. I was coming home from work the other day in about 108 F. weather (normal for around here) and after about 30 miles the bike starts spitting all over me. I'm assuming this was from the overflow outlet. Anyway, I pull over for about 2 minutes and the temp. light still won't go out. I am not very patient when it comes to waiting for a bike to cool in 108 F. temps, so I get back on the bike and ride home. After about a mile the temp. light finally goes off and I finish my last mile home with the bike acting like nothing happened. 40 some odd years of riding and this is the first bike I've ever had overheat... ... if you don't count a few Spanish bikes seizing in the early days. So what now? I haven't even looked at the bike since. Too hot to work on bikes, and not too hot to ride the others. I'm thinking a booster or wuku might help. But I would really hate for this thing to overheat sometime when I am in the middle of Death Valley.