1973 Chrysler Newport carb trouble

Engine Performance problem
1973 Chrysler Newport V8 Two Wheel Drive Automatic

my 73 newport has a 400cid with a holley 2 bbl it runs very rough like it is getting too much fuel you can see a small amount of fuel on the carb body while it is running could something in the carb be bad or do I need to adjust the air fuel mixture; also there was a crumpled piece of cardboard where the fuel line goes into the carb I removed it should there be a filter there