Today I broke in my Novarossi Plus 12-3SCT...
I used cyrul method, 3 tanks very rich, four stroking wot, cooling(piston at bdc), 2 more tanks and started to lean it out with throttle bursts(3 tanks). Then I decreased the clutch spring preload and drove it slowly leaning the motor, but didnt go further to the max after 11th tank, packed it and saved...

So, how can I know that engine is fully broken in and ready to race? I checked the pinch with glowplug installed and it was still tight on tdc, no smooth moving there..

Thanks for the replies...