Rack hardware for i series

Trying to rack the new i5000’s today and the rails f5 sends with the unit don’t collapse enough to fit in our rack. The rack we’re putting them is a standard rack but the pillar’s (where the square holes are located) were moved towards the center of the rack to accommodate vertical PDU’s in the rear and structured cable rj-45 and fiber-optic patch panels in the front of the rack.

The rails from f5 collapse down to about 27.5 inches, my rack pillars are 22 inches deep.

Does f5 offer any other mounting options?