So I took the carb apart and cleaned it and put it back on, completely cleaned out the oil system and changed the filter, flushed it, and changed it again. The bike now starts and idles and revs and the crankcase isn't positively charged anymore.... however...
after the bike warms up it starts to produce a cloud of exhaust, seems like burning oil. It's pretty bad. But when it first starts when cold it's fine, purring like a kitten with no exhaust cloud of death. Revving it though when it is warm though produces a mighty cloud of oil smoke.
Are my valve seals shot from running gas through the lubrication system?