When I picked up my Vegas, there were plastic pieces in the window wells that kept the windows from fully locking. They are black, 2 channels, about 6" long. Remove them and thr rocker locks work perfectly. I think there were 2 on each side.
Added: HWH Kick-Down Leveler; RoadMaster Anti-sway bars; Tornado Rotary Tank Rinser; Accede Backup Sensor Kit; cylinder locks (w/one combo lock); custom sink cover; Pioneer AVH-4100 NEX front radio; Pioneer MVH-X5560BT rear radio; Oxygenics Shower head; ScanGuage II; Blue Ox Tow Bar w/RVi Brake 2; whatever is next.