FYI: Problem with 10Gbps link to CNS switch

FYI: There is a problem with the 10Gig link between the CNS switch (Ten0/9) and the Juniper switch (xe-0/0/29). The Juniper reports low receive light level and drops/restarts the link. After a few rounds of this, the CNS switch err-disable's the port due to link flapping. Our friends at Cologix worked on the fibers over the weekend, but there was no improvement. We'll ship some new optics for the CNS switch to 511. Does anybody near 511 have a spare 10Gig optic for the Juniper switch that can be swapped in temporarily to help troubleshoot the problem? Thanks, Steve