Cleaned port wing top side with acetone and Scotchbrite pad, wiping residue with shop towel. A second cleaning pass with Eastwood paint prep to both sides of the wing. Mixed 12 oz of Eastwood Optiflow epoxy primer & activator was just enough to roll on a second coat on the bottom and a first coat to the top of the port wing. Held the spoiler open by clamping the spoiler control wire.
Drilled out and replaced a wingtip rivet on the starboard wing top side.
Will likely remove wing tip, fill the leading interior with epoxy, and sand the leading edge to match the aluminum.