I apologize for the long post. So I'm having some issues with my 1978 chrysler Newport. its a 400 bmotor 727 trans. I have deleted the electronic lean burn system with an after market ignition based on the 72 mopar standard electronic ignition. I have replaced the factory thermoquad with a gm quadrajet. I am running light weight springs in the distributor and I currently have the vacuum advance hooked up to a ported source currently. I seem to be unable to read the balancer with a timing light. The initial timing was set by trial and error. Basically had it retarded and advanced a little at a time until it ran ok. Problem is that with enough initial to go down the road and run halfway smoothly it kicks back on the starter restarting at operating temp. Also it runs awful on the highway if I don't have my foot lightly on the throttle because it needs the vacuum advance to have enough timing. Any ideas?