There is no z version of GRBL, so that is likely machine specific. For the jogging issue, turn off the ‘Continuous Jog’ button - let me know if that resolves it for you.
This went in without testing on all the strange edge versions of GRBL, so we might have to make it disabled by default, and drop back to the older way of jogging unless enabled on a switch.
I tried with “continuous jog” both on and off and it made no difference, still no jog control. I’ve reverted back to 0.9.07 for now and I have jog control back.
I figured out the slow print problem. $32 had reset to 0 with the update. After I changed it back to 1 print speed was fine.
I will try 0.9.08 and see if I get any differing results.
Thanks again and if you want any more info from me let know
The coder who implemented the new jog feature is going to make some changes to make it optional with a toggle. We’ll have a new patch out tonight or tomorrow to fix this.