Here is an addendum to the story that he sent a few minutes after sending the original:
Sandy,
I forgot to mention in my last email what a great color your Bonny is. As I said, that is precisely the bike I'd buy were I going to buy one. (And now that you've gone and done it, that's something I'm going to think seriously about.) Keeping the correct tension on the chain was no big deal back when I had my 1970, and my guess is that it's even easier to deal with now. The biggest improvement, I'm betting, is in the new electrical system. Those old Lucas electrics were beyond terrible - they were downright diabolical. I could never get my tail light to work for more than a few days. I re-wired it, replaced the bulb, replaced the socket, but it just kept quitting on me. I've checked out some restored 1970s on ebay from time to time, but to tell you the truth, for a few grand more you can buy one like yours which looks just as good and I'm sure runs a whole lot better. And I know what you mean about people wanting to talk about them. Even back when I had my '70, people would stop to chat with me about it. One time, a couple of motorcycle cops in Spain - members of the dreaded Guardia Civil - came over to where Marcia and I were stopped having a bite of lunch. Marcia told me not even to look these guys in the eye, so horrible were their reputations, but all these guys wanted to do was ask questions about my bike. Marcia translated and at one point I told her to ask them if they wanted to race me. She wisely refused to ask them that. Anyway, enjoy that Bonny!