68 383 with 750 carb. Runs rich

Thanks for more input. Wow never thought of the fuel boiling. Where this hard start is not an issue cold but only after just a short ten minute drive and then sitting for 1 to 1.5 hrs (gym time)that thought escaped me. I think my engine temp gauge was about 180 degrees on shut down only about 5 mile ride from house to gym. I'm not familiar with this manifold or mopar engines in general yet (wrenched on buick engines for 27 years). I bought this car as it is setup now and working out the bugs and obviously the fuel line setup with rubber hose from the fuel pump to carb especially with the fuel rail pointing towards the back is pretty ugly. I will clean up just the front metering block of the carb for now and put back together with new power valve. Sounds like I need to redo air/fuel with car in park too and then see what happens and follow some of the ideas above once she is running again.

Edit - one thing that doesn't make sense to me yet is if the fuel is boiling off after a short drive and sit for 1-1.5 hrs. Then why if I take a drive and park in my garage overnight it starts right up next day without barely a touch of gas. Seems to me if it boiled away when parked in garage it would take some refilling of the carb before it started again next day.