Paul from SWISCO responded:
July 31, 2015
For the track, start by looking at our 23-242. This is 72" long and is meant to accommodate convex rollers, which seems like what yours is meant to accommodate as well. We carry other lengths, as well, if 72" is not correct. As for the top rollers, those are no longer made. The manufacturer recommends our 23-222B as a substitute.
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