Was using my benz for a bulding materials hauler and placed several pieces of PVC conduit through the popped up sunroof. While driving home, I for got they were sticking out of the popped up sun roof and attempted to close it. I immediatly realized my mistake and tried to open it but it was jammed.When I returned home, I was able to clide the conduit out of the roof and close it. The roof opens and closes normally, but will not pop up. Any ideas would be greatly appreciated. Thanks, Dan