I've done it a couple of times, just follow the procedure in the series II manual, even if you have a series I machine. The only thing thats not clear is how tight to tighten the adjusting end screw. I guess its a feel thing. Better to snug it firmly, then run the Z up & down a few times and recheck it. Also, I ran the machine to normal operating temps before I started. No need for the spanners... Good luck.