Bulk material for repair of GM seat covers

This goes with posting to Service and Body Shop Managers forum. Our AVM tells us we can't replace seat covers, we have to order bulk material from GMSPO and replace only the affected panel(s). Anybody out there ordering material for your service dept.??
UPDATE; I checked with several local upholstery shops, one of which can get "most" OEM materials. They will not do leather, but they will do the vinyl sides on leather seats. In many cases the sublet will be as high or higher than replacement. Bulk material and carpet is available, part groups 15.500, 15.504, 15.512, but partech says good luck getting the right stuff. Also, it is all ship-direct and backorders immediately upon order.
UPDATE; I checked with several local upholstery shops, one of which can get "most" OEM materials. They will not do leather, but they will do the vinyl sides on leather seats. In many cases the sublet will be as high or higher than replacement. Bulk material and carpet is available, part groups 15.500, 15.504, 15.512, but partech says good luck getting the right stuff. Also, it is all ship-direct and backorders immediately upon order.
[This message has been edited by Hank D (edited 10-03-2000).]