Thanks for the size confirmation & another source to buy them (I corrected my decimal placement above blush ). The screws are not very difficult to find, but there is nothing wrong with the screws I have.

The boss, or protruding point inside the carburetor (that these screws go in) is where there is thread damage; this is where I was asking about the heli-coil possibility.

Many thanks!
Brad


Wrench Fetcher, PhD