old non working alumium carb or just metering blocks

I posted earlier looking for a 4777-2 carb. This is different.

I need to practice drilling and tapping holes in metering blocks. My carb is brand new, and I don't want to practice on it...

I need experience drilling and tapping emulsion holes, and the only way to get it is to drill and tap.

If anyone has an aluminum carb they can't use any more and was wondering what to do with it, sell it to me...

I will be happy if all you have is the metering blocks. I will buy them.