where can I get a scope nitrogen purged?

[JeffM]

not under warranty and not by the original manufacturer?

[Fjold]

From another website:

ABO (USA), Inc.
14041 SW 139th Ct.
Miami, Florida 33186

Repair Information: 305-860-4858
Customer Service: 305-859-2010
Fax: 305-232-7359
Website: http://www.abousainc.com/

Parsons Scope Service doesn't have a web presence, but they do offer target and vintage riflescope repairs. You can contact them here:

PARSONS SCOPE SERVICE
PO box 192
Ross, Ohio 45061
Phone: 513-867-0820

The Gun Guy is a pretty popular site and you may be able to find something to help you out there. Just type the following web address into the browser and hit enter: http://130.94.182.159/page7a.html