tailpiece

Hello everybody, I've got two Thumbs NT, a 5 string from 1997 and a 6 string from 1996 (I also have a 4 string from 1990 but I got no problem with that one). I have the well-known issue with tailpiece slot for B string. I have tried several strings and actually some of them fit right, but...

So I was looking through the Warwick online shop, and it seems that there is only one size 4-string bridge/tailpiece for sale. Does this mean that I could swap the chrome bridge/tailpiece from my 1997 Warwick with the black one on my 2006 Warwick? It would seem they are interchangeable, but I...

I see the option to buy the individual bridge/tailpiece for the normal ones, but only see a package deal (for close to $100, no less) for the broadspaced ones. All I want to do is fit a B string correctly! I have three Warwicks that need this mod, so if it's really gonna take $100 a pop can...

Riddle me this... Why do the tailpieces of different models vary in distance to the bridge? My (ex) Thumb and Corvette tailpieces are pretty close to the bridge, letting me use most any tapered string set out there. The Infinity SN is a little further back, reducing the choices of strings a bit...