The rubber strip above the boards is what's called anti-squeek. It stops metal to metal contact and the squeek that results. I just didn't know if the trucks had it too. In the catalogs I have it's referred to as anti-squeek.

Save a life, adopt a senior shelter pet.
The three main causes of blindness: Cataracts, Politics, Religion.
Name your dog Naked so you can walk Naked in the park.