What I changed was removing the lowering blocks and half of the sandwich stop rubber on the upper side of the axle for the suspension travel. Since then, the axle has never bottomed out and has sufficient suspension travel. This was only possible because the springs sag a little, but I left them as they were and this way the rear is not too high. The sagging came to a stop and everything is perfect for my taste and more I do not need to be happy with my 4/4.
