Andy, if you're qualified to comment, then why ask so many questions? Why not relate your successes and challenges, and leave it at that? Quipping "...shoot with an M6..." etc is case in point: responding "I have an M6" without further information implies that you shoot with one, know how to shoot with one, and all that. Adding a post or two later that it's a garage find that doesn't work is kinda ridiculous because it means that you have no idea how one shoots with an M6, which is the contraindicative implication to "I have an M6".
Although I've owned and shot with Leica RF cameras since the late-'60s or early-'70s, my standard camera for most of the years between 1968 and 2004-ish was a Nikon SLR .. mostly F Photomic FTn, FM, FM2, FE2, and F3. Personally, I've always found the AF features of most modern cameras to be far more work than advantage ... I don't find eye-focus and such to be of any particular advantage in the vast majority of cases, just like I don't really find multiplex mode metering options to be of much advantage either. Simplicity seems to always work best, for me at least, and promotes an understanding of what the photographic process is, and what the camera needs to do.
I don't set ignore on too many people because I welcome different opinions and perspectives. But it does become noisome occasionally when I try to give good advice to questions and then see responses which seem to mean that the individual is either not listening or doesn't care. I've been doing this stuff both professionally and personally for more than a half a century, successfully, and it's sad to me when people choose not to even attempt to understand, after they've asked what seems like an honest question.
G