Hi, I've purchased a full shapeoko kit and completed the build a couple weeks ago. When I first ran "Hello World" .nc file on 0.8c the machine ran fine (or so I thought.) When it came time to run my first job, the machine plunged too deep (or under-retracted when traveling to safety height) and went away trying to make a pass to then finally getting jammed. Must note that when trying to move the z axis by 1 step under the machine control tab in Universal Gcode Sender, the spindle jerks and chokes up, sometimes failing to travel at all. And I've also messed with the current as well to no success. So after a couple of weeks of searching through this forum trying to figure out if it's a mechanical or software issue, I decided to update my firmware to 0.9g because of the independent control of the feed and seek parameters (so I've read that this might be the issue). Now when I first flashed the arduino, the z axis moved just fine by 1 step, but the steps were a bit to huge (since I had yet to set xyz step/mm appropriate for my shapeoko). so after attempting to set the parameters based on the "Hello World" page (which is in 0.8c) I'm still stumped on what settings my max rate, accel, and max travel should be. Anyone out there who's gotten their full kit stock shapeoko to work with 0.9g, and would mind sharing their GRBL settings? Sorry for the n00bage, but so far this has been a very funstrating project

Here are my current GRBL settings.
$0=30 (step pulse, usec)
$1=255 (step idle delay, msec)
$2=28 (step port invert mask:00011100)
$3=6 (dir port invert mask:00000110)
$4=0 (step enable invert, bool)
$5=0 (limit pins invert, bool)
$6=0 (probe pin invert, bool)
$10=3 (status report mask:00000011)
$11=0.050 (junction deviation, mm)
$12=0.100 (arc tolerance, mm)
$13=0 (report inches, bool)
$14=1 (auto start, bool)
$20=0 (soft limits, bool)
$21=0 (hard limits, bool)
$22=0 (homing cycle, bool)
$23=0 (homing dir invert mask:00000000)
$24=25.000 (homing feed, mm/min)
$25=250.000 (homing seek, mm/min)
$26=250 (homing debounce, msec)
$27=1.000 (homing pull-off, mm)
$100=40.020 (x, step/mm)
$101=40.020 (y, step/mm)
$102=320.000 (z, step/mm)
$110=500.000 (x max rate, mm/min)
$111=500.000 (y max rate, mm/min)
$112=100.000 (z max rate, mm/min)
$120=50.000 (x accel, mm/sec^2)
$121=50.000 (y accel, mm/sec^2)
$122=10.000 (z accel, mm/sec^2)
$130=200.000 (x max travel, mm)
$131=200.000 (y max travel, mm)
$132=200.000 (z max travel, mm)