Are there any alternatives to sanding the strapping tape in the wing saddle?
Etching with Prymol does the same thing, chemically, as sanding. It provides a “Keyed” surface for the adhesive to cling to better. If you sand the tape surfaces to be joined with 400 grit wet & dry paper, then de-grease with a couple of drops of DAWN dishwashing detergent in a saucer of warm water, rinse and let dry, then glue up with any of the available “Goops”, it should work well.
