Couple issues on my new to me 65 dart…

Did a few things yesterday. Put in new ngk plugs and removed the washer. Old plugs were autolite 66 with the washers on. New cap and rotor. Pulled distributor and moved the hold down plate to give more adjustment to the timing. It was at 2 degrees atdc and now it’s at 10 btdc. Runs really well now, much more power and starts right up. Only issue now is when it’s cold, it runs rough. Once warmed it’s very smooth