Engine not running good

My 273 just isn't running right. I need to check it all out and find out why. It idles rough (sounds like it has a pretty big cam in it) and smells rich at the tail pipe. It accelerates good but runs out of poop at 4000 rpm. I romped on it hard
a while back and hit some rough areas on the street. The engine stalled and gas was running out of the carb. I tapped the carb with a screwdriver and got it started but it has been idling rough since. I took the carb apart yesterday for cleaning and inspection and everything looked good. It's not running lean. I did the ''old hand over the carb and watch for increased rpm trick" and killed the motor so it's not a vacuum leak although it sounds like it. The initial timing is set at 15. I think I'll pull the plugs for a look and pull the valve covers for a valve adjustment and look for a bent pushrod or something. I should pull the distributor and double check the gear position too. It may be a tooth off. In the past few weeks of occasional driving it seems to be getting worse. It doesn't sound or feel like a dead miss but more like a carb bleeding over and dribbling fuel out the boosters. (I checked that too, doesn't seem to be doing that either). I'm stumped. Any suggestions? I know, these things are hard to diagnose over the internet. toolmanmike