Your need to use the choke is an interesting clue. If the engine runs well when the fuel mixture is enriched, your ignition system may not be at fault. If the car ran OK prior to the move, and crappy now without any adjustments on your part, it sounds like the fuel delivery system just needs some TLC.
Assuming you're running SU carbs, remove the suction chamber domes and clean up the interior and the suction piston edge rings. Verify the damper tube is properly filled with 20W oil (or whatever you prefer). Do the piston lift test and verify each piston doesn't stick up and drops freely back to the floor with a click. I'll throw my two pence on the table and bet you've got one piston sticking, causing both the missing cylinder and acceleration lean-out stall. 