Update,
I've spent the day refurbishing the gear selector, here's a run down of what I did.
I degreased and wire wheeled the alloy housing first, the old grease inside was a pig to clean out as it had turned into what resembled cheese string. Here it is -

Next I wire wheeled and zinc primed the two arms -

I also painted these gloss black but didn't take a picture. After leaving those to dry for a while I started to assemble the selector. I fitted the lower arm back into the casing and knocked in the roll pin that connects it to the 'yolk'. Then packed it full of fresh grease -

Happy with that I closed it off with the plate I had powder coated, I also replaced the screws with stainless allen head bolts -

Next to go on was the upper arm, the other powder coated bits and new rubber bobbins. All bolts have been replaced with stainless ones -

I got a Moto-Lita gear knob for Christmas, it's new old stock and was quite expensive, but will tie in nicely with my other Burr furniture -



So I got that fitted along with the sponge and rubber boot, here's the finished thing ready to go in the car -

Will probably get that in tomorrow.