The vertical cable manager is interfering with cage nut holes and the ability to mount equipment into the NetShelter cabinet, what's wrong?

Issue: 
After installing finger-style cable managers the customer cannot install equipment. 

Product Line: 
AR7580A, AR7585, AR7588

Environment: 
All serial numbers. 

Cause: 
The cable manager interferes with the mounting holes on the rails. 

Resolution:
Intereference with the mounting holes on the rails is caused by one of two possible installation errors: 

1) After attaching the cable manager to the rail the cable manager must slide towards the side of the cabinet, this will draw it away from the equipment mounting holes. 
    AR7580A - See installation step 6: https://www.apc.com/salestools/JKUR-948NBR/JKUR-948NBR_R1_EN.pdf
    AR7585 - See installation step 6: https://www.apc.com/salestools/MLAN-8ZRM62/MLAN-8ZRM62_R1_EN.pdf
    AR7588 - See installation step 6: https://www.apc.com/salestools/MLAN-8ZSRDH/MLAN-8ZSRDH_R1_EN.pdf 

2) When installing the cable managers in the rear of a cabinet the accessory/PDU mounting rails must be moved out of the way. The cable managers cannot be installed atop the accessory/PDU mounting rails.