I've been thinking of replacing my bridge. I want to have adjusters in it as I already have in my present bridge. I find with Ontario weather, the height needs to be slightly adjusted throughout the year to have that "just right" feel. I was thinking if I get a bridge with preinstalled adjusters that are similar to my own, my luthier could just use the present feet and slide them onto the new bridge. This would save him a lot of work and time. So, my questions are: 1) is it difficult to shave a bridge with pre-installed adjusters? (or to put it another way, should I buy the bridge and adjusters separately and have the adjusters installed after the bridge is carved.) 2) Can the old adjusters be removed from the old bridge and installed into the new regular bridge to save $75?