[NZCOBRA]

I have a proform main body , the air bleeds are smaller than the main
jets and you need much smaller size holes, you can solder up and
re-drill the removable ones buy a nice set of wire drills and a small collet
chuck,tricky and risky unless you have a sniffer up the exhaust and a
rolling road.you may be able to sneak up on the correct mixture, buy
enlarging the holes .002" at a time,when you get the size correct it pays
to get new bleeds ,they will flow different to the soldered hole, I
welded a 18 mm socket in the front of my muffler (inside toward chassis)
and wired an oxygen sensor it will give you a good Idea of were you are.