In the post right below this Stephan included some pictures of what the back of the printer should look like. It looks to me like your cable bundle might not be properly secured at the back. If you don’t have the black plate in his print use a zip-tie or tape to get it out of the way and see if that helps.
You might also have too much of this bundle past the mounting plate. With your printer off move the head to the extreme corners and see how much play you have. Loosen the back and pull the cables down to shorten it up and try again.
Just fixed the problem thanks for everyone’s input! I contacted dremel support and it was as simple as loosening the allen bolt on the black plate that holds the cable and twisting the cable clock wise and tightening it
Well so I thought I fixed it but then it came lose and ripped my printing platform off thankfully nothing is damage that I can tell so what I did now was pull down the cable and hung it up a bit with a piece of wire
New owner of a 3D20 and have the same issue. The black net wrapping around the cables to the head was rubbing against the top left toothed track and metal belt clip to the extent it tugged some of the black net free. It also knocks the top left tooth belt when the head is at the leftmost edge of build platform. Once I stop printing (cannot help it i’ll swing the head to front right, but it does appear there is excess cable in play. Will loosen rear plate and feed some of cable back. Appreciate the comments.
So, I just got our 3D20 for our school district. I was having the about same problem. The whole cable bundle was hanging way lower than what is pictured in this thread. I don’t think it’s too much cable. I ended up putting a piece of 1.75 mm filament in the bundle to add rigidity. It has totally helped. I do think, however, I may get some 3 mm filament and replace it, This should make it sit up higher, while still giving it the flexibility it needs.
