La Bella Deep Talkin' Flats surface finish

[TC5]

I have a question about the La Bella's Deep Talkin' flat wound bass strings. I bought a set of 760FS and they are great. They have a very smooth finish to them. Smooth as glass. However I later bought two other sets (760FS and 0760M) and these two don't have nearly as smooth a finish on the strings as my first set. Anyone aware if there was a manufacturing change at one point for those strings?

Any way I can polish those strings to make then as smooth as my other set? My first set was glass smooth from the start (as opposed to getting "polished" from usage).

[Craig_S]

The 760FL's I use are always a bit "grabby" to start with. Its the stainless wrap.