Ok so I just broke in a new piston and sleeve on my 2.5r. Took it out to tune it yesterday, idled and ran low rpm just fine while it warmed up (in the low 40's here in Texas). When I would give it WOT it woulnd sputter and just stop!!! LOTS OF SMOKE. Even when I leaned it way down to where it wouldn't run and nearly richened it up so that it would run, I got lots of smoke and just shut off. Starts right back up and idles fine. No amount of adjustments seemedto remedy this. Any thoughts??????