Video: Parallel Guide System Gen 1 Calibration and Use Related articles Straightness of T-tracks for TPG Parallel Guide System (20", 30", 50") Video: Assembly, Calibration, & First Cut of Parallel Guide System Gen 2 How to manually reverse the FlipStop v2.0. Video: Flip Stop Pro for TSO Parallel Guide Systems (Gen 1 & Gen 2) Product Details: Flip Stop Pro for TSO Parallel Guide Systems (Gen 1 & Gen 2)