Ok guys,
What are the stock carb setting for the Rex 21 and p5xlt?

While I know the saying if it isn't broke don't mess with it. I messed with it. Both engines were running just fine when I accidentally grabbed a gallon of 20%. No flame outs, decent power, not real snappy but ok. Well after the gallon ran dry I went back to 30%.
Now they are both acting boggy down low, but good mid and high. I've considered both lean bogged, and rich but in the process I think have gotten too far off on my needle settings.