Fabrikator Mini 1.5 with Marlin 1.1.0-RCBugFix Extruder Problem

Hello,

I updated my new Fabrikator Mini 1.5 to Marlin 1.1.0-RCBugFix. Unfortunately all prints are failing with too less filament. Are this the extruder steps?

I tried to change the settings from

#define DEFAULT_AXIS_STEPS_PER_UNIT {201.01, 201.01, 6366.88, 97.11}

to

#define DEFAULT_AXIS_STEPS_PER_UNIT {201.01, 201.01, 6366.88, 150}

Didn't help, almost same result.

Switching back to the older version of Marlin fix the problem.

Any idea why this config is not working ?

Cheers
Holger