Does anyone else have trouble with lens caps? They fall off, or you set them down after taking them off your spotting scope? Just curious what everyone's solution to this problem is. I was thinking about putting on tack strip of Velcro that wraps from under my spotting scope to the bottom of the lens cap, so that when I take it off, it is attached to the bottom of my spotter, but wanted to see if anyone else had any other ideas.