Hi Clifford
I have sent you an email with the settings in earlier, (and just sent it again in case you didnt get it), but for the record see below
You need to set the esteps to 1900 and set microstepping to x8
If you cannot set microstepping to x8 then run with 3800 esteps if using x16. Do not use any other value for esteps as it will be incorrect
Set your E axis acceleration to 50mms (M201 E50)
Set your Retract acceleration to 50mms (M204 T50 or M204 R50 depending on version of marlin being used)
Set your E axis max feedrate to 50mms (M203 E50)
Set your vref (motor current) to 0.4v measured at the trim pot
Set your E Axis jerk to 0.1mms (M205 E0.1)
In your slicer set...
Retract speed to 15mms
Retract distance of 1.5mm
All extrusion multipliers and extrusion widths to 1 or 100%
Enter the correct measured filament diameter (measured in several places and averaged out)
The firmware settings above are a safe baseline from wwhich to be able to tune upwards, but get these working first and we go from there.
J
Flex3Drive.com