DS-3 Attenuators

[xenolith]

Hello. I have a 7206VXR with 2 PA-MC-T3 controllors in it. After days of wondering why I was showing LCV errors and testing everything, I have finally traced it down to my input is simply to powerful. I am using Adtran MX2800 M13s and the latest model does not have an option for line build out, short/long. Adtran support says it will autosense and work accordingly. My question to you is does anyone know of an acceptable DS-3 attenuator to use on the receive side of my PA-MC-T3? I was going to order the Cisco kit at:

http://www.cisco.com/univercd/cc/td/doc/product/core/7206/fru/12884att.htm

but they are backordered close to a month. I need to find something for a turnup scheduled to begin next week.

Thanks,
Josh