Try adjusting screw bushing up-down. See how to adjust the liquid silk. If I feel fine, no liquid, adjust the nut (Bolt) is too tight, remove น็อ transistors.
Try adjusting screw joints - up. I see that adjusted cash if it feels fine, then labored to show that the adjustment bolts (Bolt) is too tight, it will loosen the knots out.
Try adjusting screw ball joint up - down to see if adjust fluently? if you feel fine and not fluently then adjust bolts (Bolt) too tight, then extract the น็อตอ.