I figured ole Dive Rite gave you a bit of a discount, evidently and sadly they do not.
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I've lost four sticky mounts in air travel now. Got a cnc aluminium mount and screwed it through my LM helmet. Did two weeks cave diving in Mexico and then a 3 days scootering in Japan, it's solid with the go pro taking the occasional whack and travelling at a decent speed however it's stainless screws on an aluminium bracket in salt water, so corrosion might eventually win.
I mounted my backups as low as possible and my primary holder is just some PVC mounted high left to hold my LM 12W LED.
The only gripe with LM helmets is that I've had to gut mine and even with the basket removed the chin straps are still a bit short. They should just supply a blank plastic shell so we can make the rest up with holes and bungee.
Pics to follow