before you go that far...you said at 1/2 track?

check your dipstick. make sure it's held down tight. mine was loose and under full throttle, pressure would build up inside the crankcase and pop it out, spewing oil all over the headers making smoke...but It didn't smoke until the end of a run down the street, I'd give it WOT and not get any smoke till the end of 3rd gear.