Strange timing issue - '68 318

I must have missed your original post about hot idle problems, and stalling. At the risk of repeating something that has already been done here are a couple thoughts. Did you replace the plugs? Are they gapped right? Is the cap in good condition with no moisture or carbon tracking, etc.? Rotor ok? Did you check for any vacuum leaks. I would at least start with big leaks like carb gasket, vacuum lines, brake booster, you know. Plug wires need to be in good condition and not cross firing. Set the carb float level. Also, just wondering, even though I have seen dizzys do strange things, after the first reading of ten degrees BTDC did you disconnect the timing light and maybe re-connect improperly? One other thing, probably not your problem, but costs nothing to try. My brothers 340 Demon refused to run. I took the distributor out of my 318 'Cuda, dropped it in and it started instantly and ran like a raped ape. The distributor shaft was bent just a little. Also at that low idle there should be no vacuum to the advance, so make sure you connect to the right port.