Great pics Spud. If anyone's ever gotten his money's worth out of a bike, it's you!
Zongs are good machines, I look forward to maybe getting mine back. :(
BTW, I had an 1996 XR 250L for many years. Used it as a street commuter and a dirt bike, like you use the Zong. I took good care of it and it went 26,000 miles before cracking the head and needing a rebuild.
So, as I see it, after 6,000 more miles you'd have gotten as much use as I did, out of an XR, which is universally recognized as one of the most reliable bikes ever made!