Re air supply for suspension, there's usually a Schraeder valve in the boot under the compressor cover which hides under the spare wheel.
Got my car back from Bexhill, the old starter was jammed with the armature out so would never have worked anyway. They fitted a new starter and replaced a couple of earth straps that were showing signs of wear. I got some change out of £800 for that job. There's just the suspension joints to do now and the car should be good for a bit longer. There's a lot of clonking from the drivers side. The pot holes along our lane don't help.
I got my vintage AEC coach engine sorted, reset the camshaft timing sorted, it took a couple of days, then reset the pump timing, it now sounds a whole lot better but still has this annoying knock. One specialist reckons it's one of the cam followers not being able to rotate. The noise seems die down once the engine's hot. There's a 1970s AEC lorry in our storage shed that has a similar but quieter knock