Had mixed messages about the change from Gen1 to Gen2, some said lean the engine, some said richen.
After the first miserable outing I reset the engine to factory and started again, nice trail of blue smoke and then used the pinch method for bottom end.
As I say, all is OK, engine runs sweet, ticks over well. the nice man checked and tweaked it also.
Alas, 4 mins in it stops, take plug out and its broken
I am at a loss
Reading what Bert says, I have noticed a few air bubbles in the fuel line just before the carb, but checked the line and there is no leaks. Could it be a problem with the fuel tank? Although the truggi is only a few months old, and this is only its 4th meeting, it ran sweet for the first two (on Gen1)