OK just ordered new arm restraints from Crow. After Bonneville I can sell them. Only used once.
In looking at some on eBay, it appears that new Crow #11574 restraints which use the prohibited dual D-rings for length adjustment are still available.
However, the Crow #11574A and 11574A2 look OK - they use the flat, stamped 3-bar strap length adjuster.
Jeff in Boise