I had Parsons scope service do an old Weaver for me as well as replace the post and crosshair with a cross hair. He did a fine job at a reasonable price and decent turn around. He advertises in Rifle Magazine.
Or try ABO at:
http://www.abousainc.com/sub1.htmThe did one Beeman scope for me and I have another currently there. It takes a while and I think you have to send $38 up front but they do a good job.
I see that ABO is no longer the Redfield service center but they will still repair Redfields.
So you have several options. Good luck. Kinda nice to keep an old scope working.