The Hub

I've got a 70s Martin D12-20 12-string on my bench (slotted headstock), it needs new tuners - the original tuners have several bent worms. The only 6-on-a-plate tuners I can find are the Golden Age from StewMac. The spacing looks right, but the Golden Age posts are about 1/8-inch shorter according to the specs on StewMac, 1-inch vs the 1 1/8-inch on the originals. Will that be a problem?

This guitar will have a piano black finish on most of it and translucent black over the red fabric areas. The client also wants the white binding to be aged. I will be sealing and grain filling with a polyester sealer. My thinking is to tint the first coal of sealer to age the binding , then seal over it with clear. Then tape off binding while spraying color coats. Anyone got an easier way? Suggestions?