I do have builders manual. This part of the wing was built when I got the kit but I ran a camera down it and checked everything out. The person who built this part noted the process in the builder's log and it appears they used the correct adhesive. However, you can see a silicone bead on the lip of the tank that is not touching anything. I remember reading somewhere on this forum about someone who replaced a tank and noted that the silicone on the old tank wasn't touching the spar. I kind of wonder if that is the case on mine. I think the cracked hysol is from the tank pulling on the #1 rib via the blocks glued between the tank and rib as the tank moved outward. Maybe I should sell a kidney and buy the new tanks and do this once and for all. A real shame though since the tanks I have are like new, only not ethanol proof. If anyone else has experienced this and was able to fix it, without tearing off the fabric, I'd love to hear about it.
Thanks