Right so, Finally got some time to finish up the build to actually calibration yesterday with the time off, I have the BB dual and when I auto home it goes to 0,0 as I understand the dual stays there which is fine but my X Y Z offsets from the IR also show 0 0 0 so... ? and then when I turn off stepper drivers and move the printhead to the middle it shows X Y Z as --- --- --- I double checked the cable orientation and it looks good. I assume its working as there is no crashing of glass during the auto home but Im just not getting the numbers perhaps. As for my Z movement Ive been doing my best to keep it level but Ive never yet felt its just quite right as it gives a squeal now and then when homing, so then I started using the prepare move axis Z and run it all the way down and there was much noise and resistance I did my best to stop it when it got real bossy but what did I do wrong when I installed the threading? While watching it go down it had a lot of movement in the top of the threaded bars reminiscent of Livi in one of her videos about doing up here z movement cap. Its finally on and moving yay! I just wish it wasnt struggling quite so much. This is my first printer, I am technically proficient but also out of my depth trying to work on it though, using Livis old videos and looking for Holloways Sagely advice where I can find it. Edit: Upwards motion seems fine but going down always sounds like a straining squeal.