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mastory

UMO prints 10mm high after upgrading to Marlin_V1

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I added SSSDriver chips, and in the process needed to change some firmware options. I thought I would update to something newer. I tried the version on Bultimaker, with various issues, and have now switched to what I think is now Ultimaker stock for UMO and UMO+.

After alot of "experimenting" I got the machine set up and completely functioning, except:

Every print starts 10mm elevated off the bed. Printer homes correctly and performs my start Gcode correctly, and then moves the bed down to start printing in the air.

Any ideas what I might have wrong? I don't have and Z height probe hardware.

Thanks

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