Yes, I have just had a similar issue on our Continental. The issue as we saw it was caused simply because the people who built the caravan wouldnt know a straight line and equidistant spacing if they fell over it. Ours was the finished side of the bed box, rubbing on the side of a cupboard. I have some silicon based tape that was designed for temporary window repairs, and having removed the bed box end, it was clear to see where the two surfaces were rubbing, an area of a square inch or so. I just cut two squares of the tape and placed them over the rub marks. Being silicone based, the outer face of the tape is quite slippy and once reassembled, no more squeaks.