I own a '85 'Sporter Dbl.cab pickup with a 1.9l 78hp (code DG) engine. I live in Norway, Europe, so it's an Euro-spec vehicle. The engine is carb'ed, and it has an xtremely annoing off idle stumble - Noticable when cold (under choke) and irritating when hot! I don't know how many times I have stalled the engine trying to accelerate from a full stop. Any suggestions?

All ignition components are new (cap, rotor, wires, plugs), The airfilter is new, the ignition is right (5deg. BTDC), etc.

Help!