Epiphone Riviera neck humbucker size?

[dezb1]

I bought new pickups for my Riviera in December and after much confusion I have realised that the original pickups seem to be an odd size where most guitars are 2 1/8� at the bridge and 2� at the neck however the pickups in my guitar are 2� at the bridge and 1 7/8� at the neck. Does anyone know if I can buy a bridge that will adjust the string spacing to 21’8� so that the strings run directly over the pole pieces