Vintage Air System not too cool????!!!!

I know I asked this before , but I haven't seen a response . do you have an expansion valve or an orifice tube . if you are running with an orifice tube your low side pressure will be lower. and it is very easy to over charge them . ford's use orifice tube chrysler and gm have always used expansion valves but this is aftermarket again if you want the fan continually you should see clear fluid through your sight glass if you have 1 follow your lines from your compressor to your evaporater coil. the line should be hot from your compressor to the dryer to the condenser and then it should continue to be hot up to the orifice tube or expansion valve then at that point you should see frost or condensation forming on the lines if you see frost or feel cold on any line ahead of the evaporator coil you have a restriction if only 1 or 2 coils of the evaporator are cold then you have a restriction it's easy to plug up in air conditioning system with a small piece of o o ring dirt tape sealants anything