Been finding a few more little bits to do, so here's another little update.
I repainted the petrol filler and fitted that, and turned my attention to the cap itself. It needed a good clean up, so I carefully took it apart. Ideally it needs a new seal, but these are unavailable, and as the cap is over a foot from the neck of the tank, I am going to chance it for now. If there's any need to change it in the future I will look at my options. I gave the plastic part of the cap a good clean then gave a it shot of primer. I had to do this twice as there was a minor reaction to the primer - possibly the washing-up liquid not being rinsed off enough? Anyway, this was sanded down and resprayed and the second coat worked. I made a "gasket" out of rubber sheet for the plastic to the metal part of the cap; the previous abomination was typical of the 70s BL parts bin as this is an early TR7 cap. I shall fit it all together once the new coat of satin black has dried.
I found the adjusters for the headlights in a box and found them in a bit of a sorry rusty state. Half an hour in the Bilt Hamber De-Ox gel and a good wire brushing had them looking much better. The worst one still has a little bit of rust on it, but considering how bad it looked before, it's actually a massive improvement.
The RH Rear light has been adjusted and re-fitted, this time it's worked rather well. There are a few unavoidable Dremel marks on the inside of the lens but it will do for now. I know they're there and it does bug me a bit but until a good used lens comes up at a sensible price it can stay there.
I have solved the Oil Cap clearance issue by simply buying a different one, and dare I say it it looks quite nice. I am not convinced by the colour but as painting it would be a massive ball ache that can wait.
I've also started sorting out the new front grill by cutting a new piece out and using epoxy (and several props) to fix the studs so it can be wingnutted into place. I am waiting on those to dry.
And finally, just as a bit of a morale-booster, I popped the headlights into their holes "just to see". Zippy's starting to look like a car again!
Petrol Filler loosely fitted.
New "gasket made for fuel cap innards to plastic outer.
Cap in primer (take 2) - sorry for the rubbish photo!
Not so rusty headlight adjusters
RHS Rear light FINALLY fitted.
New Oil Cap, looking less "In your face" than the MG Metro item.
New grill mesh cut out and ready to go in
And Zippy has his face back!