RE: Why not a Webra engines thread?
ChiefK,
What engine is this?
The only .61s I have with 8x1.25mm thread are 1033 (long stroke rear exhaust with red or green head). Great running engine, but not exactly suitable for a dirty birdy. All other good old .40, .61, .70 and .80 with side or rear exhaust and front or rear induction in my possession are 1/4x28 thread and most of them are bought in Europe.
Cheers,
/Magnus