been a while, but here goes. checked out my think sign, after checking with the shapeoko people to make sure that i had my x axis, and y axis going in the right directions, and finally took a video of what it was doing. right off from the 0 points, the spindle goes to the right on the x axis, and tries to go past the rail, after a few seconds it goes back to a certain point, then makes what appears to be a lap around the perimeter of the sign, then does the lettering first pass, around the perimeter again, then the second pass on the lettering, then clears out the center of the lettering, yet another pass around the perimeter, then goes back to the original 0 point. they think it could be something messed up in the gcode. we shall see. after doing this, i dismounted the spindle and such, and replaced the bad delrin nut, much better now. now i have to zip the video file so it can be sent to them, too big to be sent now, at a little over 13 minutes long.