How come u pulled the head? Just bored? Compression is a bout normal for a stocker I think. You've only got one carb, sounds a bit big for the motor but should be able to make it run ok. First thing I'd be doing is stripping that wiring harness and fixing all those crap connections. That start stop switch comes apart and can prob be fixed. Just a set of sliding contacts in there. Bike might be lean if it was tuned for that high elevation. The head is normal that's a coolhead. They don't have gaskets, just Orings. There should be a shit ton of info on those around here. Clean that carb really good. Tear it completely apart and hose it down with carb cleaner. Doit over a bowl or something to catch the cleaner. When u take a part off throw it in the bowl to soak. Then blow all the passages out real good with compressed air. I've never had to replace jets that were clogged, just clean them out.