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frankenfrankenstuff
OK so the fix I found was.....to just pull the 3 jumpers out from under the driver. 10mm now extrudes a bit over 10mm. Done.
Or you could put the three jumpers back and, assuming your drivers max at 1/16 micro stepping, multiply your current E steps per millimetres in Marlin/EEPROM by 16. The extruder motor would run smoother that way but your fix is fine too. M92 E old value x 16 will fix it in EEPROM.
