"Primary squirter = 25 <-- this seems low to me "
Ok that 25 (prim) is way to small for a healthy big breathing motor like yours.
I'd start out with 32's squared (prim & sec) and go from there.
Also if you can find them, get the squirters with the long brass nozzels sticking out, they seem to work better than the stubbys.
Ditto> on the 50cc accell pump (prim) and jet extensions (sec) and don't forget to install a notched float with the extensions.
Reason being, if you don't the float has the potential to not drop down far enough because of the extensions which wont let the needle drop down far enough which in turn can hinder adequet fuel supply during hard accelleration.
Sorry for the book, I just like to let people know why rather than say just do it, it helps with the learning curve.
Goodluck, Cp[/quote]