thanks again for all the help with the flange. and yes a piece was broken off but no telling how long ago, so i will just cross my fingers and hope for the best.
my next question is a carb issue. i have 34/3 and the larger screw (bypass) is always moving out of adjustment.
i swapped it with another one and it still moves after a few miles.
Does anyone have a trick to keep it from moving .