The suspense is killing me, too!
Today, Al and I got the engine rebuilt and (almost) ready to turn over.
I fetched the Wellseal from the depot and then set about using it. There was a dribble of oil out of the rear of the head as we turned it right way up. I had stored it upside down with the cam cover on and had not drained it. Don't do that. We drained it, wiped the oil-ways clean and worked quickly. We wiped a little from the area after tightening the head. The gasket may therefore fail at the rear but I'll wait and see. I used new bolts and followed the tightening procedure with a two foot bar. 16 of them felt about even, one lighter, one tighter. I forgot which ones.
Trial and error got the rest rebuilt.
I inventoried the injectors and there was one shim missing from #2. I got two magnets out of an old hard disk and screwed them onto a wee square of wood. Scooping it through the scruff for a minute I was sure I'd seen it fall out of my hands once. My perseverance paid off. When comparing it to one of the other ones, I got them mixed up, but I think I got them the right way round.
I've reasoned that the fibre or plastic rings on the injectors are not critical. I've had to reason about a lot of things while doing this. The high pressure oil feed from block to head was cleaned up and refitted. We put the old tensioner wheel back on instead of the new one. Al had to get a little creative with bolting the turbo and exhaust manifold to the head, but fair play, everything's in order.
At about 11, we started to removed carbon deposits (I hope) from the injector heads with a razor blade and gave all the parts a swill in petrol. I'll go and buy a deep socket tomorrow.
So really, all that's left is the injectors, fuel pipes and battery.