RE: 30.5 will not start.
You don't say what carb it is
the threads on those needle s are very fine
if you stripped a thread and it's in the fuel circut, the carbs junk
does it wet the plug with the choke on?
take the needles out and inspect them for damage, when you screw them in
just lightly to the seat, seats are aluminum
your problem is spark or timing, or you'd be getting a little pop as in the begining.
however, what ever it is let us know
tap