Fuel sending unit calibration

I just located a nos sending unit, issue is the guy wants an arm & leg for it. I may bite the bullet on it to see if it solves the issue. I wont get a chance to put it in till spring, so I'm hoping someone finds a cheaper fix in the mean time.
I may try the unit from year 1,like you I won't be able to install until spring,hopefully this will fix the problem,will post again when I find out