Hi, guys! Ed and Paul (and everybody else), it’s good to see you here! I’ve been looking around your site, and I’m glad to see the positive remarks about my car, Carlisle and the SOC guys. Thanks for that!
No, I didn’t buy a TD. I’m here to help with the float question. 
I have a JAZ cell, with the foam in it, and I use an AutoMeter fuel gauge with an AutoMeter sleeved sending unit. When I first installed it, the gauge got intermittent readings and was inaccurate for the first few days. After about the third day, the gauge was outright stuck, reading not quite full. It wouldn’t drop, and I had to use an ohm meter to figure out why.
It was getting most of the current it was supposed to, and there was no way to see what the float was actually doing because it was in the tube. I removed the sending unit and took it apart; the float on the stick is what changes the resistance, and the resistance is what the gauge reads. I left the ohm meter hooked up, and slid the float like a slide trombone to make sure it was functioning correctly. It was.
The difficulty was that the crescent-shaped float had swollen slightly after being immersed in the tank. The tube wasn’t quite vertical in the cell, which is mounted at a slightly canted angle in my Speedster. Because the float had swollen, it was getting bound up as the top of the float touched the back wall of the tube and the front, lower edge tried to stay upright.
I put the float on a belt sander for about 15 seconds, rocking it back and forth, removing about as much material as you would if you took the peel off of a lemon slice. On re-assembly, it functioned as advertised.
Since then, it’s worked brilliantly. Hope this helps.
Cory Drake
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