Hello all! First time on this site. I installed a rebuilt, all original carb last year and I've run it locally (2-3 blocks) around the neighborhood. I drove it some distance (25 miles) each way and barely made it back home, because it seems a sudden loss to maintain idle. When I get it started, I can only keep it running by choking the air. It's getting fuel, and it seems like a classic massive vacuum leak. But It happened in one instance. So I'm looking for any info before I take the carb and manifold off. Thanks.