@dc42:
To park the head when the print finished, add appropriate moving and/or homing commands at the end of your slicer end gcode, just before the M0 at the end. Alternatively, just put M0 in your slicer end gcode and define the shutdown sequence in /sys/stop.g.
Many thanks, I believe my original resetting issues have been resolved. I'm still trying to get a print out of the machine, as my use of the manufacturers Marlin settings, plus a possible extruder issue has caused me some problems. Once i get over this hurdle in the next few days, I will play with my setting to help find the original cause. It does sound like its probably that zero jerk speed for the Z axis in the M566 command.