Bought AVID engine bearings (total $15 ). Interesting to see the durability of those bearings.

My engine are still performing very well. I removed one 0,2 mm shim. Set the idlespeed a little higher compared to when it was just broken in. 20,7 liter (5,5 gallons) through it until now.

OD77T plug, Novarossi 9901/41021 and Novarossi 6 mm venturi.