Engine sputtering at about 65

Ok so an update. Spent the last day messing with the fuel system. Replaced the fuel pump, all hoses from the steel supply line coming forward from the tank all the way to the carb and the filter. It now will not idle for ****. I’ve taken the idle set screws all the way in and back out almost 3 turns and it still hasn’t leveled out. I’m not wanting to go any further than that because I’m not sure what that’s actually doing to the fuel delivery. I’ve looked at vacuum and now I’m at 16-17 and jumping all over instead of the smooth 20 I had before installing a brand new fuel pump.

I’m very new to carbs and timing so that’s why I had the carb professionally rebuilt a while back.

I will try and get the model number later today.