Interior or Frame question? Staple problem

We just purchased our new to us and first Trailmanor 3124 KS in a private sale and went out on our 'maiden voyage'. We really enjoyed the TM:, but had a problem when we got home. We opened it back up to clean it, empty frig and so forth and could NOT open the bed all the way -- it lacks maybe 1/4-1/2 inch. Sliding back in and out did not help. My husband got a flashlight and, with the bed slide out as far as it would go, peeked underneath. He saw the problem: While you can't see it from the inside of the exterior storage area, the top of it (in the area between the storage cubby and bed slide) has a couple of popped staples and part of the covering is sticking up. We are at least 3 hours from a dealer -- how can we get to the staples to re-secure them and completely open it without it happening again?