Wrench for slide adjustment?

[audreyg]

Without getting onto a long painful story as to why I am attempting to adjust the slide myself, does anyone know what size and type of wrench is needed to loosen and tighten the nuts on the front of the bedroom slide? It is a very tight area and a regular box/open end will not fit. I believe it is 1 1/16" or 1 1/8". I tried channel locks and they won't work. I'm thinking maybe a tubing wrench. I don't want to go out and buy one then find out it won't work. Thanks