Technical carburettor help

[dickbarnes]

My 1992 1108cc 1.1 IES, is getting on my nerves. starts fine and when warm runs and idles perfectly, but until it gets warms and when revs die like stopping at lights etc. she cuts out, restarts fine, but you need to keep revs high. One thing I noticed when engine is still cold, if you disconnect the plug on the butterfly valve potentiometer she doesn't cut out, idles OK, mind you a little bit rough though.