andyfarthing

It's possible - I'll run a few more prints on stock to see if it pops up again. If I can't reproduce it on stock then I'll flash back to...

Facebook comment here: [comment](https://www.facebook.com/groups/WanhaoDi3/permalink/846763215474911/?comment_id=847010832116816&reply_comment_id=847027042115195&comment_tracking=%7B%22tn%22%3A%22R4%22%7D) As an update - after a few successful prints the same problem has now popped up in the stock firmware, so I'm not really sure what's...

I flashed back to this firmware (thought I may as well) - the first few prints turned out fine, but then the problem appeared again. The only change I made...

It might just be coincidence, but that's the only change I made. If I run "M221 S350", prints look fine (maybe a little over extruding, but certainly closer to what...

Running the G92 E0 command before extruding sorted out the backwards motor, thanks. It still only extrudes 40mm though!

I (think) I managed to resolve it in the end, but I made the schoolboy error of changing two things at once, so I don't know which was the solution...

@Deneteus Well, it's not an issue with Marlin as such - Marlin defaults to 3mm anyway by design - it's just that obviously our printers run with 1.75, so it...