is this a common cargo cover issue?

[stackz]

past couple times I've pull the cargo cover its kinda fought me on my 2001 x5.

yesterday I pulled it so I could put the seats down and put in a screen door. the passenger side gave me a fit.

put the cover back in a couple minutes ago and noticed that the tracks/teeth in the side panels had chunks taken out of them with pieces of the track laying in there...which would catch the cover's rolling teeth and cause all the binding.

is this a common thing? I want to buy replacement panels but I dont want to risk buying used ones (expensive even used on ebay) and they be all torn up.

is it just dry rot that causes this or a design flaw? should I just update to the newer 04-06 cargo cover system?