Thanks for the reply's,
Since I still have the stock muffler mounted to an aftermarket DG pipe, does that still require jetting or is it usually when there's an aftermarket pipe + muffler?
I was previously running a 240 jet before removing the head. Plug was colored grayish/black which may mean kind of rich?
Mabe the 240 jet would be a safe starting point after overbore?
Thanks