Broken screens

[bigjake392]

Well I took out the screens to clean them.......... that all went well but I should have known as something on these things is always breaking ! When putting them back in, two of the plastic rounded corner pieces that hold the side and bottom metal rails broke. I was using very normal pressure to push the springs up and on two different screens ( both of the large ones of course ) I heard a snap and that was it. Can't find the part on GD parts lookup and no help from GD yet. Does anybody have any ideas where I can get these or the equivalent ?