I also feel that glueing the wing saddle foam strips to the wing rather than the fuse works best. Again, I use a pen to mark the location of where I need to remove covering with soldering iron and make sure that no exposed wood will show beyond the foam.(cut inside a little)I use epoxy and masking tape to hold it while it cures.The epoxy is not affected by oil and mounting it on the fuse always comes loose sooner or later as there is less area to glue to,plus the edges of ply/balsa are loose & jagged for a poor bond.