Rolleiflex 3,5F Planar Lens Separation

My father's rolley, after almost 50 years of family photography, begun to develop some lens separation on the planar's front group, first in periphery, later growing some mm a year. Is there anything to do to save this lens? I searched on this and other resources but still it's unclear to me if fixing lens separation is a standard repair, is something only few repairers will do or is only a diy option with unpredictable results.
Anyone knows a repairer in Europe (Italy) who could threat my lens?
thanks for reading/helping

There aren't a lot of technicians that will touch servicing separation.
This guy closed up shop recently and makes no bones about it but he could do
almost anything with lenses. He has a link to his old site
if you think that would help. http://www.baldmtn.com/
Besides him, I'm not familiar with anyone in the US that would do it.
If there's someone left, I'm sure someone will let you know.

Try emailing Focal Point Lens , Jon Van Stelton
http://www.focalpointlens.com
I understand they do this type of thing. I have never used them.
It's a camera worth the effort.
Good luck

Many thanks to John and Jeff for links provided. If I'll not find someone here in Europe will consider sending oversea.

I have had other work done at Focal Point, Jon does very good work.