Id disagree with ya all and say that if your talking about a stock sachs/square bing that your jetted too BIG. A 62 is really big for that setup.
Maybe you do have air leaks or something tho, i dont even see how a sachs without porting could run that high of a jet but whatever.
regardless off all this banter, your the only one that can figure this out. Look up on how to do plug chops and do them.
Finding out if your bike is running rich or lean is done by plug chops. The internet sucks at it.