Holley 1945 issues

I've been running a Holley 1945 on my slant six for a few years now without issue, but lately I've been having issues with surging at cruise and bogging during acceleration as well as intermittent trouble at idle. Was hoping someone on here could point me in the right direction to resolve the issue. Rebuild? Replace? I'm not super knowledgable about carburetors and I'd appreciate the help. Thanks.