Today I installed the fuel sender in the left wing.
The install was fine, definitely easier with the tank removed, and easier the second time around. I sanded away the primer from the rib, around the area where the sealant would go. Then I test fit the sender and made some minor tweaks to the arm position to stop it from hitting the bottom of the tank, and the top skin too. Then I mixed up the sealant and got it done. I should have added some hole location info before I covered the holes with sealant. I had to fiddle around to locate the screws into their holes, and in the process I messed up what should have been the perfect install. Anyway, it looks ok and I think it’s a good tight seal.