I need a drill bit size 66 to make a .033 high speed air bleed. which of course I don't have and neither does any of the part stores or hardware stores in my area. The smallest drill bit I have is a .059, I measured it with my digital calipers and it comes out to .039
So I can make .039 high speed bleeds. Which will probly be too lean, but I was thinking if I jetted up the primary jets to 65's it might be ok. I have some 65 main jets I could put in there. And I could take it for a test run this way and see if there is any issues.
I just wish I could get the .033 and .035 high speed bleeds I ordered faster.