Just purchased the Rover Plus from Costco and used in pool last night (16' x 28' - 3-6 deep - vinyl liner). It completely missed one section in low end and one section in deep end. The owners manual is very generic and apparently the only setting I have to worry about is the dial (played with that thru cycle) on the transformer. The front wheels of the unit have this removable "pin" that makes one wheel fairly stationary - the other wheel slides back and forth 3" or so. Should that pin be out so both wheels slide back and forth? Should both wheels be pinned so the unit now has 4 stationary wheels?

Thanks for your help ~ Paul