Agree with beltfed. We had a saying at the Aerospace company I worked. Someone would say "If it's ain't right, what is it?"....we all answer in unison....WRONG!
In our world and beltfed's world there was no in-between. Too much at stake. Not just running out of gas in a truck.
I also have never had much success in trying to fool a sender and gauge with discrete components. The result is about the same as a dip stick. Life is more pleasant if you just use a 30 Ohm sender for a 30 Ohm gauge. You will have more friends. Gophers will leave your garden alone. Your tires will last longer.

Right is right, even if everyone is against it, and wrong is wrong, even if everyone is for it. - William Penn