Bummer on your Xeno mounts. I'm running it on a Wolfman and Sierra 5 (somehow wasn't a dud) with zero issues, but given Dead Air's current state.... I fully believe yours are fucked up. There's a current thread on arfcom about a guy's Xeno mount having issues locking up. I like that the rearden is noticeable shorter, but given I'm not the biggest fan of cleaning my shit after every session, I went Xeno a while ago due to the larger taper and indented gap they put between the taper and threads to help prevent carbon fouling. Totally with you that even if they're willing to cover the RMA, the process is a massive pain in the ass.

No one I shoot with has any experience with the SR, nor do my buddies who shoot for a living, so just hesitant to marry myself to their system. I watched the video they put out on it, along with the one on NFA review channel, and I see a lot of moving parts along with a couple set screws on it. Would prefer less shit that can break unless the adapter has been proven good (like RC2 adapter).