17 degrees today so I didn't anticipate spending too much time at the hangar; I'd intended only to START the process of pulling the fuel tank so that I could install those four rivets I missed during construction of the center section. But the fuel tank came out easily once I loosened the fuel lines so I pulled it and finished those rivets. However, I noticed a "nick" in the fuel line just below the collar for the B Nut. This is the second time I've found a nick in this location. Previously I thought maybe a wrench dinged it during tightening. The fuel tank is a really poor design and it's near impossible to get wrenches on the nuts. But on this particular nut, I think it was the collar that pressed into the tubing somehow; possibly while making a bend. I don't know. But I pulled the fuel line which means I also had to remove the autopilot servo. This is a REAL pain in the neck to make because the Van's instructions don't work; at the tank end it says to make a 21/32" mark and begin a 35 degree bend, THEN flair the tube. You can't; a collar won't fit over the bend and you can't flare with the collar in the place. This has to be done after flaring using spring benders. I've got enough tubing to make one, maybe two attempts at getting it right. We'll see.