I have scoured around a bit, and I am still not 100% sure on what I should be looking out for when configuring my Volcano Z-offset. I have 2 v6, and a volcano, and I have "dry-tested" setting the Z offset at the bottom of config.g, so the v6 are z-5, and the volcano are z-15, but I am not sure about the tpre macro, should that drop the same amount, or any amount greater than the G10 configured value? I see the v6's bed drops Z by 10mm, so I suppose for the volcano I should drop by 20mm to give ~5mm play? Is this right? Is there anything else I should consider, I am new to Duet, and feel completely lost with how to get these offsets safely set and tested, and then have no idea about configuring simplify3d how to do the tool changes / manage any saving Z, loading it from userspace stuff if needed.