OS 7D Carb.
I have a OS 90 FSR with the 7D carb, i need to buy a new
needle valve o ring but can't find the one i need.
its quite flat and a greenish colour
The needle does not have the grub screw in it like the
ones i have seen while looking for part
like the ones for the 108 fsr.
Are those needles interchangeable so i could just replace needle i have
with one of those.