The new Mantec Grinder at Nordic Ultratune has several noteworthy features. Here's a video clip featuring the ski path control mechanisms and also the conformal drive pressure.
The ski path is controlled by a set of alignment rollers that are pneumatically activated. The mechanism assures that structure patterns are centered and aren't skewed.
Drive pressure utilizes a pneumatic tire to spread the pressure uniformly regardless of surface irregularities, including bindings, without a bridge.