New Auto Meter Gauge/Sending issues

Here is a link that may help explain things.
http://www.autometer.com/tech_faq_answer.aspx?sid=1&qid=56

The main problem is that the ORIGINAL FACTORY tank sending unit is NON-Linear in design,

Most if not all of the replacement ending units on the market although they look the same are LINEAR in design.

This is also why folks still have "fuel gauge" problems after replacing the tank sending unit with a "new" aftermarket replacement.

I will try to post photos of the internals of both types later.

Herb