Thanks for the suggestion, Niles. I used the nylocs that came with the rack for the nuts on the bottom eyelets, as well as the outer nut on the fork extension. Again, the bolt that came with the rack was useless......it was much too short. I double nutted the bolt at the P-clip, but only used 1 nut against the inside of the rack....I might need to add a 2nd nut there.
I am still trying to figure out the best way to secure the hook on the bottom of the panniers so the hook does not slide off. The bottom most horizontal bar on the Jandd has a support welded to the back of the bar to keep the hook in place that direction, but there is nothing to keep it from slipping forward. I am thinking a large cable tie around the bar might do the trick. It would be catastrophic if that hook came off and got into my spokes.