I think that article proves my point. The sender only gave that guy a moving gauge. It wasn't calibrated to any specific value. He had to modify the circuit with a resistor to improve it.

That's the reason why you can't necessarily mix and match any sender and gauge that you want off the shelf.

'06 Dakota QC 4.7 6sp 4x4
'88 Mighty Max
'77 KZ1000 fun old bike