"I did use the old needle but not the old seat. will try that next."
I think this is your problem.
BTW, the Mikuni seat will have a tiny Mikuni symbol, which is a square within a square, stamped on it. Just in case you mix them up.
I think this is your problem.
BTW, the Mikuni seat will have a tiny Mikuni symbol, which is a square within a square, stamped on it. Just in case you mix them up.