well, first off, WHAT ARE THE SYMPTOMS?
what pipes do you have?
330+ is not that far of a stretch with porting. hell, i'm stock ported, boysens, pcp's, 20cc's, billet k&n adapter w/o lid, and 330 is lean @ 70*
you should get an accurate reading with klots and 93, as long as you are doing it long enough (10 sec. wot, ideally)
p.s. 33-34mm carbs are WAY different jetting than 26's
if you are doing the plug chops right, keep going up :thumbsup: