Sears has a new very handy version of the easy out for such things - has the drill bit on one end and the easyout on the other - works very well in a varible speed cordless drill - in low gear with just a touch on the trigger

unless you're talking about the tiny screws in the bottom of the slide?

If your talking about one of the screws on the top of the carb get a small file and flatspot the sides of the head then get in there with a small pair of vice grips and try to loosen it, it worked on my carb. If it a screw on the slide maybe a tiny easy out will work. I've never had much luck drilling out small screws in aluminium, the bit wanders and messes up the hole. Luck with it

cool - them is number 1's down in there a 0 will eat their lunch - this is not news I bet - good job getting the little bastid out of there

for sure... the only way to not lose a few is to never do anything, tonight I was pulling the front and back wheels off to have some new me880s installed and in fact just stripped out one that holds the front of the belt guard on - thought I had a #3 in the power driver - not! buzzzzz - crap where's the vise grips - stainless allen head is going back