My old 3/8" sender had a removable float arm so I took it off and moved the "reostat" with an allen wrench and I was able to get down to about .2 ohms if I max out the travel at the full position. Tried this on the car (outside the tank) and got over 7/8" on the gage. I think I'm gonna try it out installed with float arm bent enough to give me the sme travel. Whattya think?