One of my Novarossi and JP collections are over 2 years old now, maybe they worth of 10 gallons of fuel, two p/s/r replacement and 1 front bearing. I'm still using the same crankshaft, underhead, body and carburator.

I guess novarossi engines are not that bad . I'm satisfied with their performance and reliability. However, I also admit the sleeve is wearing too fast for my taste.