Yep, you reminded me of something that happened when I was working on my first K0 Eric. I bought it from a member in the US, and it was more K1 than K0. He'd bought a minty diecast K0, removed all the shiny parts and fitted them to a sandcast that he'd dragged out of a swamp somewhere, and sold the (now shiny) sandcast to another member. I got the rest.
Anyway, I bought a set of proper K0 carbs from another member here, and needed throttle cables. I saw a set on ebay, did the buy it now, and dropped around to collect them, as it turned out, from the Fawkner clubhouse of the Rebels MC.
I must admit I was in two minds of walking in there, but the seller saw me coming and came out to greet me, we had a good yack, and he was really stoked that I was restoring a K0, he had one he'd restored and was selling all of his leftover parts. Like you said, he told me that he'd had 750/4's "Back in the day", before he could afford his first Harley.
My wife and kids were out in the car so I had to keep going, because he invited me in for a beer or ten. Sometimes the nicest people you meet aren't on Honda's, but they still have one hidden in the shadowy recesses of their garage..........