Forum:P2: Knoxx Armory Glitch

When playing thru P2: Knoxx, I must have inherited the Marcus missions for going thru the armory a second time/third time from someone else.

The result:

on the plus side, I was able to get the kill all midgets, soliders, skags, prisoners really early which allowed me complete it way before the 1/2 way point.

on the down side, When I beat DLC3 P2, the missions objectives get 1/2 completed (for the 3 armory based ones) and I am unable to complete the first of those missions, thus, not allowing me to reach Crawmerax for my P2. I assume if I play with someone else when they go thru these mission it might resolve it, or alternatively break their mission objectives as well. :(

Maybe I was unable to "expose the weapons munitions" or whatever and that was the source of the problem. Any ideas how to resolve this?