Perhaps an inexpensive alternative based on my only experience. They're still in business: In 2009, I used ABO (USA), INC. of 14041 SW 139th Ct., Miami, FL 33186 telephone 305-859-2010 (
www.abousainc.com), manager's name is Shin. They don't shy away from "vintage" nor "german." Crux of their business is servicing Redfield/Tasco etc... I was told the repairmen are South Americans (Argies) specially trained in scope repair. They fixed what I thought was a loss - vintage German AJACK (A.JACKENKROLL) scope on a 7x57 August Schuler. Hazy view as if vaseline was inside, yellowing, wasn't even hitting paper at 50yds. Then I realized the front bell was bent sideways about 1/3 cm (funny the auction house didn't disclose the bend!). ABO USA couldn't guarantee against breaking the scope due to how badly the scope was bent, however, they straightened it. According to their invoice, for $70, they 'Cleaned; Aligned; Resealed; Reset the objective; Reticle parallax-optical center-POI; Straightened the bent tube; Re-treated the optical lens; Repaired the separated erector lenses.' Shoots fine now and clear as crystal. Excuse gratuitious pics previously posted on single's forum:
If you look you can see the silvered discoloration of the tube below the knurling and how badly it was bent leftward!