A mate came over tonight and we had a tinker with his carb - the car runs rough when idling and stinks of fuel when it's turned off. It was noticed the choke flappy thing was wide open. Whilst tinkering the plastic bracket the control screw turns in snapped (see photo). Would anyone know where to buy one? Also, any general tips for these carbs? I've never played with them before and I'll look into it, but all carbs have quirks you only find out about as you play with them so any advice would be great.
And here be what it's in.
And here be what it's in.