I am one of the very disappointed persons who went through two M2500 screens before replacing them with the M1300. It solved all of the problems I had attributed to my projector.
For your information, my dealer contacted Draper for me and arranged for the screen replacement. Draper charged me a 15% restocking fee (about $70.)
If you do arrange for the replacement, be sure to ask for the M1300 to be sent "rolled on a core." Otherwise, Draper will probably fold it in a box. It will take many, many weeks (if ever) for the folded creases to unfold fully.
Remind your dealer (and follow up with a telephone call to Draper yourself about two weeks after the order is placed) to tell Draper about this, and that the M2500 you are returning will be returned in the same packing and box in which you receive the replacement M1300.
Let them know that you no longer have the original box the M2500 came in.
Let them know that if you have to fold the M2500, it will be forever damaged and worthless to Draper.
I certainly hope that they did not send you the first M2500 I returned to them. It sounds exactly like mine--the bicycle tracks.