Continuing the discussion from Varjo Aero VR headset:
Bought this for my HP G2.
It took a while to get this piece of kit (from I think NZ) to the US but it has made a difference. Initially I thought the counter-weight could be heavier but after a few hours it seems about right. I don’t have to re-adjust nearly as much.
It was worth the purchase price and I recommend it if your head isn’t perfectly shaped for your headset and/or you find yours tilting down often (even a little is semi-annoying to me).