Sound like you had the best deal, and your comments I think are spot on, this is what Ken Heanes said after his test ride in 1972,
"It almost has the characteristics of a four-stroke; it's certainly got the pulling power. As far as riding it goes, the gear lever and brake were on the wrong side for me, but I soon got accustomed to it…. after one or two “momentsâ€â€¦. rushing around the gravel pit I did change gear with the brake lever once or twice. Anyway, we ran it in the gravel pit in which Vic practices, and I thoroughly enjoyed myself. I found it very good on choppy ripply sand and on very bumpy going with cross gullies the back end was exceptionally good. If I've got any point of criticism it's that I found the front end too heavy, I felt that the steering could be improved. It seemed very heavy on cornering and wanted to hold on to the ground. Vic Eastwood of course, rides a motorcycle differently to me, and it may well suit him. He said I wasn't the first to criticize this though, and he was thinking about doing something to the forks. That was about the only thing I could criticize it for. Over hard ruts it's really good. It doesn't jump about, it's dead straight, and the more you power it on, the straighter it goes, which is one thing I like about a bike."
I would still prefer the BSA four-stroke, but that is purely a personal thing. I would say that in mud the four-stroke is still the better bike, but on a grassy circuit, as we have in the Southern Centre, I would say the AJS would be unbeatable."
I had seen a frame for one on eBay for sale and thought that must be the only part left, then I found this article in Classic Dirt Bike,
https://l.facebook.com/l.php?u=https%3A ... 6KctXSsIYQ
try this link, look for the Press Reader photo and follow the link to the photo's page, good little article with some great pictures. Or try this link,
https://www.google.com/url?sa=i&source= ... 4913530368