Saving a set of BS34s

I'm looking to fix these carbs and I'm in need of replacing these slugs from the circled holes. Throat to bowl port plug? Not sure what to call em.

The P.O never got em to run right even with a dyno jet kit... gee I wonder if it's because he had drilled a small hole in each plug :blink:

Plugs removed, carbs free of damage, now I just need to replace them. Anyone know where I could get these?

What about tapping the drilled hole in the plug for a grub screw?

The only way I know to get those plugs is by extracting them from a set of carbs. They could be lathe cut easily enough too.

That's what I ended up doing. 7/16 aluminum round tuned down and just slightly pressed to fit with some threadlocker.

Thanks Nessism-