Artic silver epoxy could be a way to fix it although it is too permanent for my liking.

Martin has metalworking machinery so I think that a clip like the ones I made for my watercooling could fit most aircoolers too. It is just an H with two 1cm thick aluminium bars and a threaded 4mm steel bar in the middle, it is strong enough and being so thin it should fit in most coolers.
I already made mine with 75mm centers so I hope that there is enough leeway to fit my clips perhaps by using thinner bolts so they can be angled a bit more.