I would be checking that the carby hasn't got a vacuum polution hose which could be leaking or not closed off....but generally this will make them run rough all the time....if you have to have it idleing at 1200 revs to keep it running, then there is something else wrong, maybe your carby or intake manifold is sucking in air around the gaskets....I am only builder not a mechanic....

and not to worry about what car you post, I had the audacity to put a GT Falcon, HQ tonner ute, and a Ferguson tractor on this site.....

Oh and these are words from Rodney, I wouldn't know