Cracks = Broken framing
Hey Camelracer, I just had to deal with those same cracks on my '06 Grandby as well. First I got a crack on one side, then the other side appeared.....then the door fell off in the desert! I took it to FWC, where they had to fix/ replace the framing above the door and replaced the door. My cracks looked identical to yours, and it's a bit strange that they are the same year Grandbys as well. Anyway, the folks at FWC did an excellent and timely repair job. I dropped it off on a thursday a.m., went to the foothills for a moto ride/ camp overnight, and picked it up the next afternoon. Upon inspection, it was determined that the framing was all busted up, so they replaced it with stronger material. By the way, this all happened on my first trip with a relatively new/unabused Grandby. I hope '06 is'nt a bad vintage! My first FWC was a '78 that lasted for years of abuse....even a few high speed jumps! After the recent repair, I headed down to Baja for my usual surf and turf, and the camper/ framing is doing fine. Give the FWC service dept. a call, and make an appointment.