I was watching the Orndorff video on the RV-8 wings. What was done in the video was to cover the tips the of the fittings with tape so no proseal made contact where the plumbing was connected. Most of the threads were covered but not all leaving some open at the base. Those parts that had to be attached to the fitting were not prosealed at all.
The AN818-6d on the pickup tube did not get prosealed. I gues you could proseal it for added security so it wouldn't come loose but I don't think that's necessary. It looked as though everything that penetrated from the inside of the tank to the outside got prosealed inside and out.
I'm a good bit behind you in construction so what I'm saying here may be inacurate but that's how I'm planning to do it - unless I here differently.
Hope this helped.
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"Pilots: Looking down on people since 1903"
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RV-9, N556RM, O-320, Dual PMags, Catto 3 blade.
FLYING since 2018
Mosquito XEL ready for flight
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