Fuel Tank Install

[Tomfox]

Two questions -
1. At the root end, the tank sits above the spar because it sits on top of the spar reinforcement fitting. I would need to dremel off about 1/32" about 3/4" out on the flange in order for it to sit down on the spar evenly. Thoughts on this?

2. The manual says to fill in between the tank and the #1 and #3 ribs with flox loaded epoxy. I have about 3/16" gap between the tank and the rib on each side. Is it intended to fill this in without any backing underneath?

Thanks
Tom Livermore

[colospace]

Tom,
I have used a width of thin balsa to back up the epoxy. I also filed and sanded the flanges as needed to get good fits all around. Plenty of material thickness on my tanks.

[jiott]

Same here, but I used tape as a backing under the epoxy. I dremeled the flang at the spar reinforcement so the tank sat down snugly on the spar and level with the top of the ribs.