I am using a wasp 2040 turbo fdm printer with simplify3d and running into an issue where the extruder rewinds the filament till pulls out of the feeder completely before printing.
I have ran the same print multiple times. sometimes it happens sometimes not. I also happens with other print files. I have used cura also and it never happens.
Given the random nature of the issue, it makes it hard to pin down whats going on.
I am using and sd card to transfer the files.
So every print I have to hand hol the printer before it starts, to make sure I disengage the feeder until the approach to the printing bed. which is a real pain.