I have a new to me 1999 shee that is giving me fits. It's bored .040 over, boyesen two stage reeds, pro design foam filer and base, no air box lid, stock carbs, stock pipes, 93 octane mixed at 60:1 with amsoil 100:1 oil, ngk br8es plugs, 92lbs compression on both cyls(is that a little low?), 670ft elevation, and about 70 deg F. I thought I have had the jetting set pretty close a few times but my shee keeps overheating after a 3.5 mile around the block ride. I'm not a real big fan of hot antifreeze running down my leg. I'm running stock pilots 2.25 turn out, needle in 3rd clip pos, and 210 mains. The plug color looks light honey brown on the electrode insulator. Shee runs great all the way up until wot. Feels like it loses a little power. If I back off to 3/4 throttle shee picks up and runs stronger. I'm thinking that my overheating problem may be related to my jetting issues. I have flushed the cooling system and replaced the antifreeze with a new 50/50 prestone mix. My impeller is stock, but in good condition. I have seen that the water is flowing in the radiator. I have also installed a new head gasket and de carbonized the head. Any input on my jetting or overheating would be greatly appreciated.
Thanks
Woody