RE: Update on GS40 leaning problem
Super Tiger does have quality issues at times. During the last days of the Italian production, I bought a 90 and a 61ABC. They both had 40 type carbs in them. Also I bought a new needle valve along that time to fit in a engine tah was just a year old and the new needle valve was .0005" too large to go into the hole. I polished it down to where it would fit.
Enjoy,
Jim