Hi guys I am having real trouble fitting these speaker rings. I bought them a few months back but decided to leave it until summer to fit them (could have used a hair dryer I suppose but just put it off). Anyway I cannot get them to stick for longer than 5 mins. I used IPA to clean the surface first but they just won't take. Has anyone got any suggestions? Unsure about using superglue for fear of damaging anything and it being permanent.