I am still working on my 327. Finally got the carb. to quit dumping raw gas in the engine. Now it still runs slightly rough. I checked the plugs, they look alright. I also checked the timing, and the distributor look s good with #1 at TDC and the mark on the balancer is exactly on zero. I go to time it with the vacuum advance off, and the timing light flashes but there in no mark to be seen on the balancer. What would be the first thing to look at? Everything is like new, and the wires are right on the distributor.