Prinoth is handling old Bombardier parts. They just opened up a new midwest place only 25 mi. from me, and they told me they do sell new flexitors and arms. Call them about pricing, but it sounded like they have some kind of sale once a year, so it may pay to wait if possible.
A few of my flexitors and arms were damaged, and since they both needed replacement, I just opened the clamp area up some so they clamped well and welded them in place. I have already had to grind one loose, so no problem removing them. Until I can replace the parts, this will have to do.
Of course, my first winter with this cat is coming, so we'll see how it actually works out...