update
took the fuel tank down for george to sort, A few small pin/nail holes that can be soldered up, but george reckons he'll put a patch in. Usual caveats about welding a tank
spent today finishing the inlet manifold off. I took it apart a few weekends ago and stripped one carb. Kept the other as a reference, and very glad I did. The photos I took were also handy in sorting out how it fitted back together
all cleaned to my somewhat low standard. Looking at what others do with metalwork I wonder how it is done and how much time you spend

After several sessions working with the car and coming away with a headache, the common factor is the spray degreaser, carb cleaner and gasket stripper, they are potent chemicals.
the air box has been rubbed back and spayed in grey engine enamel. I tried to get a match for the blue-ish grey they came in, but it ended up a lot darker. If anyone has a suggestion on what that kind of grey was called I'll see if I can get some.
some pics of before and after

the before shots.

the dashpots, awaiting the autosol treatment.

just the one oops moment. Forgot the piston was in the front SU and turned it upside down, dropped the piston and needle onto the floor, but close inspection revealed no damage
I found the way of extracting the jet linkage arm without undoing springs. I unscrewed the control shaft a few turns to give that few mm clearance without letting the whole shaft fall out.

I was careful about keeping the parts seperate. I followed David's (Adelaide) threads and advice on springs and measured the springs. The front is at 7 ounces at 2.75" while the rear is the full 8oz using the kitchen scale trick. Excellent information david, thanks. I also did the standard piston "fall" measurement and both were within tolerance, the rear carb needed a bit of extra cleaning to sort out though.

I had two spare jets and flexible hoses that came with the needles I got some months ago. When I dismantled my carbs I found there was no seal at all in the float chamber where the hose connects so decided to use the new ones.
I'm still stuck trying to get the old temp sender unscrewed. Seized fast. Soak overnight in penetrene might be the answer. Strange nut size on those too.
And if anyone wants to share the trick with me on how to get cast aluminium looking sparkly, I'd be grateful to hear it
Relaxing day.