More questions: I realize not everyone is a machinist or a Formula 1 mechanic, but how is the build quality and tolerances on the unit? I was told everything is anodized and stainless steel hardware is used throughout.

The rollers are aluminum with plastic end caps, correct? Any sideplay to the rollers? How about the sliding frame? Any sloppy movement against the outer cage? I was told cartridge bearings are used both underneath the carraige and for side movement.