I keep my TT bike on my trainer a lot so it deals with a lot of weird sweat related wear. I’ve swapped out most of the exposed hardware for titanium but now I’ve worn through the adhesive on base of my extension pads. I tried swapping it with some regular old velcro but that didn’t last very long at all; it’s just not the same kind of sticky…
Try this:
http://www.mcmaster.com/#3m-vhb-tape/=txp8my
3M VHB double sided tape. It is a whole new world of sticky.