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Thank you all for your input. I removed the z motor and have determined that the bearings aren't moving as smoothly as they should. They appeared to be fine but further investigation has proven...

Ok the z truck moves up and down a little rough. the bearings all move I keep seeing in the replacement pdfs that if the truck moves rough, adjust the z motor pack gears. I can't see how to do that....

After Upgrading to 1.188, still stopping in the same spot z axis stall. I will hope then new memory card will do the trick.

I will give it a try. i think my card got corrupted from computer virus.

I did reflash the firmware, replaced the FFC cable with new one yesterday. I have not updated to 1.188 still running 1.187. connections are good. rails are clean. bearings seem fine. ztruck test...

I have recently been getting a z-axis Stall that happens at the same point no matter which project I am carving. The first thing I tried was reformatting the flash card and re-uploading the project....

Try www.smallboxhardware.com