Fuel sending units read WRONG time after time!

Well, I am not sure what you mean by that.....

I used an OEM style sender.....when I pulled the old original one it looked the same as what I was putting in.....??? So not sure....but if that is the issue I guess that explains it.....

But wouldnt an "oem style" part be the correct type?
if you want laymans terms, the electronic signal in the gauge is not the same as the one in the sender. Do a search for yourself " mopar linear and non linear fuel sender