shocks for cardinal

The cedar creek rep, recommended Joy Rider shock to me. He said they no longer install them on new trailers, since the angle that they can install them does not work well. I replaced 7 year old originals with Monroes, that were supposed to be correct, but all the stems bent in first year. The Joy Riders are $230.00 per axle as camping world has them on sale with new brackets, which get them at a better angle, like shock are supposed to be installed. Camping world had article in one of the old magazines, showing how to install them. If you put Joy riders in one of search engines you will find lots of info. They have two sizes, probably be 3" with fifth wheel trailer. You measure axle inside u bolts, to determine this as reps at camping world, had no idea when I asked.