Thanks, Carl. Points are new and adjusted. Carb is probably in need of a rebuild and may be the source of the stumble. It’s well used, but seems to run well. Haven’t checked the accel pump yet. I’ll dive more into it tomorrow.
Edit; I see you added more info. Agreed, and I’ll check that tomorrow too (ball and pointer). Was just throwing out some questions this evening. I do disagree that bad timing will cause a stumble. Fixed that in many a car.
Yes, incorrect timing can cause a "stumble". You originally indicated that you had a "cough". So now I do not know what you have.
In any case, it is much easier to double check the timing than it is to rebuild a carburetor.
It may well be that your carburetor needs some attention, but it is always best to check everything else before you move on to the carburetor.
