I realize three years have past since you asked your question, but since I just saw it a minute ago.....
The stops for the drawer is a pair of very long bolts on either side. Slide your arm along the edge of the drawer and you will feel them. I think they are 9/16". Using a small socket wrench, they can be backed out, then the drawer just pulls out.
Craig and Carol
1997 34' Excella 1000
1970 27' Overlander, International
2009 Ford F150 5.4L
ProPride hitch with 1400# bars
Past President Southeastern Camping Unit (12)