Thanks for the input Howard. I wasn't sure how many years the bimetal unit was used. I restored a 47 clipper taxi years ago that had the same unit but that car was oddball on everything. It may have even been replaced somewhere along the line too.
<a href="http://s102.photobucket.com/user/brianl_03/media/sender2_zpsbcb788f7.jpg.html" target="_blank"><img src="http://i102.photobucket.com/albums/m81/brianl_03/sender2_zpsbcb788f7.jpg" border="0" alt=" photo sender2_zpsbcb788f7.jpg"/></a>
When i took this one apart, everything was black and crusty looking. I sprayed it with Mothers mag wheel cleaner and rinsed it with hot water. Twice. I let it dry good between applications. This made everything bright again. My main problem was a poor connection on the center prong that sticks up in the middle that contacts the top. I gave it a slight pull upward. Put it all back together and I was back to the same old 1/2 tank was the highest it would go. Back apart to study some more. If you look at the photo, there is a ramp with a gear at about 9 o-clock. I turned it counter clockwise first and it dropped me to 1/4 on the gauge with the key on. I thought "sweet, it is adjustable." Next I added a couple gallons to top it off. Then I adjusted the ramp it till it read full. The next step was to drain a couple gallons at a time to see where the gauge read as I went, just fearing I had just moved the scale up and 1/2 would now be empty. Not the case. I was pretty excited to see it drop all the way to empty and even a bit below before it would actually run out and strand me. (I used a bore scope to see the pickup tube and level of fuel) Now it was time to fill it back up and watch the gauge again a gallon or two at a time to see if it had any new quirks. All is good. Everything was perfect for a test drive so why not? I knew how far it should drop off full if I burnt off about 3 gallons to go hang out with my parents for a while. Perfect. Several trips to the new house and back to the shop, it still drops and seems to be right on the money. I have a few more days before it hits E but I feel I can trust it now. Can't wait to see it on the full mark again. If you have any questions, please ask. It was over engineered for it's time. I even found a tool with a pin that sticks in the hole just above the ramp that has a tiny little cog to move it. As you can see, I bent a cog at the top when I used a pic to move mine. But it worked.
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