JB weld, flex seal or full rebuild ?

Me too.
Then had to take it all apart again.
Whenever I would shut the car off, I had to wait 10 to 20 minutes before the starter would turn it over again. I thought it was a weak starter at first, but no,it wasn't.
I already knew something was up, cuz it liked a lotta throttle to idle at, and it ran hot at 60mph; but I blamed it on the 292/108 cam.... cuz I never had a cam that big before, and I was learning..
I bought those KBs because the hype said I could install them at .0015 to .0020 skirt clearance. I was so mad when the block came back at .0025. Now, 6months later, I was thinking I owed my builder an apology. But still thinking the pistons were locking up, I sent the block out for another .0005.. (and while I was at it, I shaved the decks another .005, which is what it took to clean up the previous shop's work). So now I'm thinking that the skirts are gonna be .0030....... but no, the new machine shop can't measure forchit, and the block comes back at .0035 skirt clearance. Yeah I checked My tools. Anyway water under the bridge Ima thinking. So I put it back together with the same rings, and don'tcha know it, it's still locking up.
Well, you know, I'm learning as I go, so 14hours later I got some new file-fit PlasmaMolys in there with something like 10% more gap and badaboom, end of all my problems. Oh, and as a bonus, my LD tester can hardly measure the leakage; so I'm liking those rings a lot. Time well spent.
So what I learned was; .0035 skirt is more than adequate, .0025 was probably ok, and .0015 the minimum spec mightabin ok afterall but I'll never know.
Also;the .0065 ring factor spec in the catalog, for me, was just too tight
The towing/nitrous spec of .008, like Rusty says, would work.
But I was learning, and since I was freshening the engine every winter anyway, I skated up the middle (about .029),and it worked out for me.
Another thing I learned is that filing rings, with a hand-cranked, clamped to the bench, ring-filer; is kindof an art, and takes more learning than I anticipated.And Another thing I learned here in Manitoba, is the three top-tier machineshops I used, seem to be OK with a 2 or 3 ten-thousands tolerance when honing, and 2 or 3 thou when decking, and if the line hone is crooked, and your rear mainseal starts leaking right on the engine stand, hey, it ain't their fault.
So it took me a good day to figure out which rods to put in which holes, and every hole had custom-gapped rings, the KB pistons, thankfully, were about bang-on, and a 383 ropeseal seems to be keeping the oil in the pan. My thumbs and my feet,were so sore.