Quite often we get asked about the wooden dowels in some of our cabins. The dowels do seem strange as square pegs are going into round holes.
Although, it looks as though it won't work, it is in fact supposed to be a nice snug fit as it ensures they are in there nice and tightly. Sometimes these may require a little trimming for them to go in a bit easier. Please see the link mentioned below for how these go in:
However, occasionally some customers do not realise that they will need to use these when installing and are put to one side and forgotten about. But these are essential and help with the cabins structure.