I have some idling problems with my 13b carby engine.
When i start the car it runs fine at idle but when i rev it to about 3000rpm or over then take my foot straight off the accelerator it will rev down and stall, it won't idle.

I had a look at the ignition setting and it had been turned clockwise so that the nut sits the right like this - - + - could this be the problem.

I think the engine has an extend port.