The ratchet lever for the strap on the outside rear wheel tray broke off. I have a two bike rack, so I want to move the rear wheel tray on the inside bike holder, which I don't use, to the outside bike holder.

The rear wheel trays have a twist handle that you can loosen which allows them to slide back and forth on the bar, but they will not slide off the end of the bar because a screw head blocks the tray. I tried removing that screw on order to slide the tray off the end of the bar, but the screw won't budge.

Does anyone know how to get a rear wheel tray off a Yakima rack?