A few more jobs sorted.
Engine temperature was unstable. Very cool going down hill and quite warm going up. Turns out that the wrong thermostat had been fitted. The Perkins has its own internal bypass built into the cylinder head, so the thermostat should shut right off. The one fitted had a 6mm [edit] bypass hole (OOPS!) [/edit] in the plate, so downhill the engine was still being cooled, rather too much. Changed the stat to the correct one with no hole, which cured the instability problem, but as my temperature sender is downstream of the thermostat, it wouldn't register properly when the stat was completely shut. I drilled a 1mm hole in the thermostat plate, just enough to keep the sender warm, but not overcool the engine. Now I need to learn to trust the temperature gauge. The engine is a real trooper though.
Had another go at the minor gearbox leak. It's coming from a stud drilling, so I made a doughnut out of PTFE tape and squashed it in with the nut.
Adjusted the gear linkage. It was only a smidge out of line, but a slight improvement.
Adjusted the overdrive inhibitor switch. Although I had tested it before, occasionally in reverse the overdrive would engage if the gearlever was pushed to the left.

Very very nasty! A slightly thicker spacer under the switch finally got it adjusted OK.
Fitted the wheel trims I got off Fleabay. No wonder they are left over "new old stock". The hub caps wouldn't fit over them, and just popped off every time. I trimmed around the hub cap buttons, and now they fit OK
Having refitted the doors, I found that any key, or no key, or a screwdriver, or nail file would open both front doors. The bit the barrel fits in is made of PLASTIC and very worn. Sally suggested that in those far off days vehicle crime didn't exist. (She should know better, she was living in Liverpool in 1970). In that case you wouldn't need locks at all would you? Still no excuse for making them out of cream cheese. I disconnected the passenger door mechanism, so it now locks/unlocks from the inside only. Then I did the same to the drivers door, but fitted a Yale (front door type) barrel next to the handle, and connected it to the mech so it operates the lock. No photos for obvious reasons. Haven't decided what to do about those rather insecure quarter lights yet.
Passenger window winder didn't work, as the drop glass bottom channel was rotten. You could wind the winder, and a little later the drop glass would......em.........drop. Crash. Made a new one out of a bit of stainless, plus part of the old one that was OK and fitted it without removing the window. I did a photo, but its hi res, and too big to post.
Is there a smilie for "Smug self satistfied old git"?
If there is one, I need it right here. No those white lines aren't a result of OCD. If you've tried reversing a truck into a shed on a sunny day, you will know it's like reversing into a coal cellar. I need all the help I can get not to damage anything!
I've ordered the water tanks, so plumbing and gas fitting will be next on the agenda.
Then MOT time. That will wipe the smile off my face.