I'm racking a BA23 system into a corporate cabinet, using a BA23-AR mounting kit. I have the rails, front brackets and front cover but I'm lacking the rear brackets that secure the rails to the rear cabinet posts. Apparently some racks require these brackets and some don't. I have _three_ racking kits and none of them have the rear brackets. The brackets are short pieces of sheet metal, about 2" deep and 3" high. They are bent in a shallow U shape with an extended tab on one leg. Part numbers are 7428372-01 and 7428372-02 (left and right sides). They are shown in the BA23 Enclosure Maintenance manual, p 2-22. Please let me know if you can spare a pair (or more) of these items. Thank you, Jack