eaglemountainman
WKR
Kowa Genesis
Seems like they have some adhesive in those threads though. Also looks like the eyecup may have become warped at some point.You shouldn't even have to send them in if they're anything like most binos. They should just send you a new eye cup. Unthread the old one and thread in the new one. 15 seconds and you're done.
Do the Kowa's have a threaded opening there on the hinge point to accept an Outdoorsman's Bino Adapter stud? Hard to tell from their picture if that cap can be removed or not.
That's one of my must haves also.
I went through this a year ago and settled on the Nikon Monarch HG’s my only theoretical regret right now is that I picked 10x instead of 8x. But with different use cases I might just need two binos.