Ok, I took my carb apart with 5/32" drill in hand, ready to drill holes as I have read about...but I chickened out! Exactly which holes are supposed to be drilled out? I see two vertical holes with brass inserts, but it looks like it would make a real mess to drill these out... can someone give me input on what works? Did it help? I suspect most people also change jets at the same time, so it's not possible to give a true report on how much diference this made. I'm afraid if the slide opens TOO fast I will get a bog, after all it isn't a pumper carb. Also, I wish I better understood how this carb works. It appears that positive pressure, rather than vacuum, opens the slide.