Sweet, got the first of 3 running today. It is great on the flats, but uphill is a whole different ballgame. It is like accelerating up a cliff when I ride up a slight grade.
I’ll take the exhaust off and clean it, as I’m pretty sure it hasn’t been done in a while, if ever.
As a side note, the petcock I used was an OMG from a Magnum, which is also 15.5mm.