Hooked up my 21mm Mikuni set-up on the Polini 4 petal and working on tuning it.
My question is where is everyone buying their needles? Are dellorto needles compatible? Tried all of the settings and nothing is working out.
Also, the needle has 614CM2 or EJ4CM2 stamped on it. Hard to tell which it is. Is this a genuine Mikuni needle? I