here's a pic - for me it's about 1.25 rotations out to the correct height (the same spot Swaro, Nikon, and Leica go to at full extension). It takes 5 rotations to unscrew them completely, so I feel like they're secure. I occasionally look down to see if the tape marks have moved while I'm birding...they generally stay in the same place.
The o-ring on the right barrel is doing its job holding the eyecup from moving, I put two o-rings on the left one but they've shifted upward, so it goes, one of these days I'll take them off and trying packing the entire space with o-rings....doesn't look like Zeiss is interested in offering a better eyecup, it's been like this many years now.

The o-ring on the right barrel is doing its job holding the eyecup from moving, I put two o-rings on the left one but they've shifted upward, so it goes, one of these days I'll take them off and trying packing the entire space with o-rings....doesn't look like Zeiss is interested in offering a better eyecup, it's been like this many years now.
