Replicapro I had the same question. industrialhobbies.com has a tutorial on adjusting them, and putting them back together too if you slip up and half the darn ball bearings fall out. lol IH notes to tighten them (nth) of a turn for various sized ballscrews and lists the preload in pounds also. Mine also felt tight with the correct preload and seem to make a racket but run smooth as silk under power. |