I pulled my holley 4180 and rebuilt it BUT I lost some screws and can't find replacements I've checked local yards every parts store in my area does anyone have any tips other than buying a new carb

 

The screws you do have probably fit where the lost screws went, at least in diameter and thread, so take one down to your local hardware store and buy some equivalents. Buy a screw cutter to make custom lengths if standard lengths don't work in every place.

In addition, there are dozens of Holley carb dealers online. One or more of them should have fasteners available.

 

Well I'm in the midst of getting the from a guy with what he said has a lot of carbs laying around and I can try to find the screws I need but if he does (fingers crossed he does) ill go to the hardware store and get some replacements