I got my brass set screws and they are great, the bit goes through it like butter!
I've had some steel ones of the same size and it's impossible to drill those.
Here's my question, these will work fantastic for any hole size up to probably .065, .066, but what do you do if you want to go bigger?
Is there a larger set screw that is still small enough to work so you're not drilling huge holes in your carb, (huge being relative to the bleed hole size of course)?
Any bigger hole in the set screw and it effectively wipes out the hex socket portion of it.
Rick