Recently my rear passenger door lock quit working properly. When trying to unlock the doors from drivers door (both manually and with the key) the rear passenger side knob will only come about halfway up. I can only pull the knob up about halfway manually also. With the door being locked, I can't get the inside panel off. Any suggestions?

2000 Sporty 4 dr
2" front spacers, TJ rear coils, 30x9.5 BFG All Terrain, Warn manual hubs