Her is my advice after adding Suckit boot to My Shapeoko with HDZ
1- NEVER add the suckit boots without sending the Configuration in latest CM software to reduce the X travels , this is very important before installation .
2- add or print spacers and install them to X-Axis Drag Chain Bracket that will keep good space between the limit switch screw and the dragchain for smoother move .
3- mark the suckit boot adjusment bracket to insure that this is the end reach so we not touch the Bitsitter .
4- Always keep the power killing switch in your hand while test and starting until you very sure from all management and installations .
5- Install your router , For Dewalt users be carful and twist the router from the wire curve on top to avoid that Dewalt crash the bracket while Z travel .
6- I always Keep Calibration Bit after updated to latest CM that keeps me with the software orders with the bitsetter option .
Hope you All Have a safe Milling and Machining
here is some pictures for my setup :