If you can't adjust the rollers for some reason, you can always make the trailer into a flatbed, which is what we have done with all our trailers now, by bolting on two sheets of plywood and covering them with carpet that we scavenge from the dumpster behind Al's Carpet. <img src="http://www.catsailor.com/forums/images/graemlins/smile.gif" alt="" />
This way we are able to carry anything from a Wave to a Nacra 6.0 and it can also be used as a utility trailer, to carry anything from furniture to bags of topsoil.