+1 on float/ float level inspection,Gary. We almost always see eye-to-eye, but if I was dealing with a carb set that could have any cockamamie combination of parts in it, I sure would want to know every piece of brass in the SOBs before doing anything else.
Now here's a question we should have asked right off. Josh, did your motor fall on its face at quarter-throttle from the start, or did the problem develop after you'd had the bike for awhile? Also, what year is your bike and what ignition system do you have: 80-and-forward factory electronic ignition, 70-79 factory breaker point ignition, aftermarket ignition with factory mechanical advance unit, or aftermarket electronic ignition with electronic advance?