Hmm. This looks worse than ever, like you said...
However, you touched something here.
For this problem it is not that important that the length of the Bowden tube is plus minus a cm or so (the normal length of the Bowden tube is 705 cm if I’ll remember right). The most important is that the Bowden tube is all the way down into the” Teflon coupler” and WELL locked with the white “knife lock” at the top. When you lift up this white lock, the small knifes will be forced (due to the cone) toward the Teflon Bowden tube. So you really need to keep this "lift" pressure up to assure a correct lock.
On my printer one clip (red or blue) is not enough in order to keep the Bowden tube in place so it would not slip, I must use two!
The same is true on the feeder side off the Bowden tube were I also had to use two lock clip. You should not have any play here.
So keep focus on the Bowden tube lockers.
Again, on my printer, one clip did not hold at all. Have a closer look on the white lockers to see the small knifes.
The length specified for the Bowden tube is more about movement freedom and prediction number of steps the feeder need to go, due to "auto" feeding, so it do not ram into the extruder at full “mating speed”.
I can’t think of anything else that can make such a strange pattern. Hmm...
Anyway, good luck.
Regards
Torgeir.
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TheStargazer 1
Again, it "kinda" looks like under extrusion, but it is not uniform across a layer, and the problem is repeatable layer after layer in a way that makes patterns.
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