Hmmmm...tried to upload some pictures but the app complained they were too big? Basically I pulled off what I believe we're the Nidecker straps. They're burly but seemed a bit unforgiving. The toe strap may be used as a cap, but it doesn't inspire confidence in that configuration. The Ride toe straps are grippy and low profile, but not the ruggedest things I've come across. The ankle straps are plush but responsive.
I had to fashion some plastic washers to fit the toe straps flush to the Catek extenders. I also trimmed the hard plastic combo washer that sits outside the Ride highback/ankle strap screws so the edges would not extend outside the heel loop. Probably could have run without these, but I had a spare set and they fit like a charm. The nice thing about the Ride highbacks vs the Catek plastic jobbies is that they sit flush in the heel loop. The lower edge of the Catek highbacks push your heels forward about an inch. Pretty bad design. Plus the Ride's are way stiffer. Again, if I had the Nidecker Carbon highbacks, I would've kept them. All In, I'd buy another set of FR2s and make the same mods with another pair of El Hefes currently in service. Though the El Hefes are nothing to sneeze at and come stock (now) with carbon highbacks. Also I was able to find stainless replacement hardware for the Cateks at the local hardware store or through a supply house, except for some admittedly critical parts. I pray those don't fail!
If I can solve the size issue with the pictures, I'll load some more.