Problem with ferodo shoes.

This past summer and again today I've got some faulty Norton shoes made by ferodo. This is the 5th pair in 7 that have had one or both shoes skimmed on an angle. The lining is about a 16th of an inch thinner on one side so precious little contact will be made (unless of course you taper your brake drum).
The offending shoes are early commando fronts, 06 0006. Ferodo # FSB 920. .... Forewarned

Ugh, duly noted by me as Peel's Gafer wave rotors perfer metal impregnated pads and Fredo is about only source I see for themin off the shelf Commando kit.
Five out seven oh bother, but thanks for clearing out their faulty stock for the rest of us eh : )