Hi @stewart, I got someone to print me the parts to finish the upgrade. I think I did mostly right 
but I have a few questions:
- Is the y endstop “tab” on the on the y linear rail part suppose to go between the y-end stop sensor or does it go on top it? Your picture from post #5 shows that it’s on top, and flushed to the rail. The part I printed out have the tab in between the two “posts” of the sensor.
Your setup:
Mine:
This is what I printed:
2. Also, there are three parts in the y endstop tab (onshape), am I suppose to use them all? I only see you used 1, and I only used 1.
3. Is there anything special I need to reconfigure once I switch to volcano/v6-type hot end, other than the nozzle sizes? Or any other nitty gritty physical adjustment to get it running properly?
Sorry if it’s confusing but let me know if I need to clarify. Thanks a lot!