Thanks for the replies guys. Perhaps a good thing to do over winter, when the car's not being driven up here in the 'salt belt'...
Almost thirty years ago I purchased the Eastwood Kit for creating cad plating. It was the only time I have been disappointed by a paint product from Eastwood. I sent the booster out to get it rebuilt and re-plated shortly there after. Still on the car today and it looks as good now as it did when I put in on when I got it back. I've had several sent out for rebuild and restoration since that first one. No regrets.
You can buy Chinese GM boosters for like $60 now on fleabay. Ive had them on some of my cars over 15 years now ...non have failed.Wish I could get a Chinese job for my 70 Cuda just had Booster Dewey rebuild and plate it and it cost about $450.