I've just finished a light restoration of my side screens (1974 4/4 2str). They had scrapes and scuff marks on the outside profile where they had been laid on concrete or similar. The anodising was certainly broken through. I removed all the anodising with 120 grit wet and dry and then used progressively finer grits until it was smooth. Finish off with fine wire wool. Not exactly the same finish as the remaining anodizing but close enough. A coating of wax protects the surface. I did my MGB windscreen surround like that and it's not suffered in over five years. Doesn't cost anything and worth a shot before get any professional work done. Just needs a bit of elbow grease.
I washed and dyed the fabric with Renovo I had left over from redoing an MX5 hood but would perhaps just make do with just a good clean unless you intend to dye the hood as well.
I polished the perspex after removing scratches with wet and dry but probably wouldn't bother again as you can buy cut to shape perspex from one of the perspex suppliers (only found one that would cut to anything other than rectangular) for about £6 a panel. I used the smooth half of Velcro folded into a U shape in the bottom grove of the sliding panel as I was missing the felt liner on one side.
