It’s a very curious situation, indeed. Like you said, we’ve got the same mod ensemble, and I waited till 55k to do my valve adjustment. I had to go right back into mine that time and remove the head for purposes of valve seal replacements, and so I got up close and personal with the valves and none of them looked questionable. Minimal deposits on the pistons… really makes you wonder.
I tell you what, though, perhaps she’ll pop on any given Sunday now that I’m tracking her. 65k on the clock and spending a full day on the track at 10k RPM may take its toll fairly quickly.
One thing’s for sure, we’re gonna find out. I hate that happened to you dude. Maybe pick up a low mileage eBay engine on the cheap just to get her back up and running? Prolly what I would do..