I'd advise the MS/Polymer glues (Modified Silane polyether/polyurethane). Extra strong and hardens to humidity, very useful for reglueing pads. Must be spread in very thin layers(*). Keeps a bit of flexibility once cured, and use no solvents, so do not damage the glued surfaces.
They exist in all brands: (UHU Max Repair, Pattex 100%, SADER Mega Strong, ... and Sikaflex)
(*)
www.adhesiveandglue.com/modified-silane.html