I stripped the bolt on the knob/bolt that holds the bicycle stable. I was surprised to find the part available from Hollywood Racks at a reasonable price. Now I like my dual bike rack again and use it all the time.
Wheel holder adjustment knob
I lost some pieces to my rack and ordered these. They work perfectly!!! Thank you!
Shipped same day I placed the ordered. Kept me informed on status of order. Web site was really easy to navigate.