Mine was loosening up on one side so I simply installed a few self tapping sheet metal screws right through the scoop and hood. Seems to hold well now and I am contemplating doing the same to the other side so it matches. I may cut an actual hole in the hood too so the scoop is for reals.
I'd have to go with accidental activation theory as well. I was setting mine off so many times I thought the fob was messed up or I was. My solution was to attach the fob ( I genuinely hate that word) to a carabineer and intentionally carry the key by the carabineer. Seems to have helped.
I searched for them as well and I don't think they are a thing. I just removed the rear lettering and think it looks a lot cleaner for what it's worth. Have a great day!