The tension between monofilaments in the figure is seriously uneven. The quality of warping shaft (head) accounts for 90% of the quality of warp knitted products. So it's important! The remedy of warp knitting is not necessarily effective, you can try it. 1.GB2 guide rod (0-0.4-4) Loosen the pull rod. (Reduce tension spring, reduce tension spring force) 2. Add a tension balance bar (folding) before the tension bar. 3. Fine-tune the let-off ratio between guide rods. (If the product style allows, tighten the yarn tension of GB2). Try it,