Does Ridgid make special cutter wheels for their four-wheel cutter so that it can be used on PVC? I was told that such wheels are available. I understand that the wheels used to cut steel pipe don't work so well on PVC because of the bevel on them. I was told that the PVC cutter wheels are straight with no bevel and do a much better job of cutting thru the plastic, but I can't seem to locate any. I don't really want to use anything other than a roller cutter for a variety of reasons.