Corrosion Under Fabric Aileron Leading Edges

[Steve W]

For the last two years, corrosion has been growing under the aileron leading edge fabric between the two hinges. The original aluminum was not primed before the fabric was put on. I used Stewarts System for the process. There isn’t anything happening on the two end pockets on either one of the ailerons. I am suspecting electrolysis is the cause. The corrosion is only in the area of the aluminum balance tubes. I made lead sticks the diameter of the inside of the balance tube. When the final balance was done, the tube was filled with an epoxy resin to keep everything in place. I think I constructed a pair for batteries.
Before I pull the ailerons this winter for an inside look and a recover, does anyone have any suggestions, other than a good epoxy primer, to prevent any further damage to the aileron skins? Any way of de activating the current that is causing this? The plane is hangared and the covering has been on for 7 years. I am sure the stainless steel rivets holding the tubes to the nose ribs are in contact with the lead. Appreciate any suggestions.
Thanks
Steve P203

[Nev]

Thanks for the heads up Steve. Will watch this thread with interest.