Originally Posted by dan_vector

Yes pretty much. These break in super easy. I do 2 tanks full open throttle very rich on the bench followed by about 20 minutes gradually leaning so that at the 20 minute mark I'm about 90% full race speed. Run like this for another 20 minutes before finally tuning to full race tune. My old novarossi's used to take at least double this and a full race meeting to become fully broken in.