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Upgraded from Marlin 1.02 to 2.03 & 2.04 now Homing randomly failing Failes

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[attachment 114926 Configuration.h] - Pegasus 8 LCD -(Basic)

[attachment 114927 Configuration.h] - Pegasus 8 LCD

[attachment 114928 Configuration.h] - Pegasus 12 LCD

I have (3) Maker farm Pegasus Printers (2) Pegasus 8 and (1) Pegasus 12

All 3 were running 1.0.2 Firmware provided by the manufacturer, I was able to run a utility that allowed me to transfer the settings to more a recent version of the Marlin firmware.

For the most part this has made great improvements to all 3 units.
But the problem I have run into is that the all (3) units randomly stop with an error when running a "Auto Home" command with "Homing failed, printer halted, please reset" this happens when initiated either manually or from the gcode prior to a print. As you can imagine this very annoying.

Most of the post I have found are hardware / wiring related. how ever I have made some hardware changes since i purchased them, I change the Z rods from M5 to T8, but this was long before I upgraded the firmware and I never experienced this error under the 1.0.2 firmware. I have attached the current firmware loaded on all (3) units. Perhaps their is some new vaibles in the newer config.h that I need to change to address the problem, Can anybody review the files and tell me what I need to change?

Thanks

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