I guess I'm a little late for this, but this might help someone in the future. Glad you got it fixed.
If your plastic cracks, and it's going to be a while before you can get it fixed, then this will at leat prevent the crack from getting any worse.
Drill a small hole (1/16" - 1/8") at the end of the crack. This is called stress relieving. This will stop the crack from spreading until repairs can be made. I made a cheezy pic here at work on MS Paint. Crack is green, stress hole is red.