Technical Demon 98 tri power

Could anybody help we have a tri power Barry grant demon 98 set up new been in boxes about 7 years primary and both outer carbs secondary's with progressive linkage. it is on a 1500 mile fresh mild hemi ,starts on the ****on ,idles fine ,drives fine BUT when you come of the gas i.e. at a crosswalk ,stoping in a traffic holdup will just stop restarts ok but we are having to put the auto trans in neutral all the time it is making a nice car a pain in the **** ,fitted in a steel Original 32 5W we are in England which makes it more a pain in the ****

Help


Sent from my iPad using The H.A.M.B. mobile app

 

Float level? Too much fuel pressure? Secondaries not sealing good?

 

I had a similar problem with a Holley 4bbl years ago. The mixture screws had vibrated way out of adjustment.