lol I just had this same issue. Have a CPA-2 and not knowing any better, I have been processing away with rollers for a larger Tank. (I have a 1500 series). Finally got around to trying to figure out why my tank was so out of level. Spent a little time looking for an adjustment on the machine itself. Finally figured out that I need the little extension arms that fit on the base block. Unsnapped the rollers from the base block, put the arms on and then the existing rollers on the extension. Brilliant :-)