Holley 1920 missing parts - time to swap?

The Achilles heel on the 1920 is the low speed passage in the metering block. The way it is situated, there is no way to effectively clean it out during a normal rebuild. Its also prone to clogging because there is no easy way for fuel to drain out as the carb sits. Any gas left in there turns to gack and blocks it up.
This is 99.5% of all 1920 drivability issues.
The fix, is to remove the metering block, and pop out the lead plug at the top of the block. I use a long bristle from a wire brush to slowly poke and drill through the passage until the wire can be seen at the bottom of the block, through the low speed jet hole.
To seal it back up, I cover the hole at the top with a sliver of soda can aluminum, and a coating of JB Weld.
You get that passage clear, and the 1920 is an amazing little carb. Idles and responds cleaner off idle than the BBS.