Part 2 of my squaring video series where I discover that not only do I have run out but rise too! Because the gantry is not only out of square (left & right) however also up and down. Things that make you hmm, however I must admit this has been a fun project to take on! Yet how to solve this? Guess we will have to wait and see in part 3 
https://www.youtube.com/attribution_link?a=vlsqDKaK6p8&u=%2Fplaylist%3Flist%3DPLInTrkIbj69kPO_UP81yxX-xov4SVyPlD%26jct%3D6d0MEif3sEN6XtZHgCLThJ5oaUfpaA