in my experience if the tapers have been compromised (read no longer square) this occurs. I began having that problem once because I hadn't tightened the arm enough originally. Resulted in slight rounding of my square taper. Solution : gently filed the taper square again, secured carefully with locktite.
Never broken the arm tho..
in my experience if the tapers have been compromised (read no longer square) this occurs. I began having that problem once because I hadn't tightened the arm enough originally. Resulted in slight rounding of my square taper. Solution : gently filed the taper square again, secured carefully with locktite.
Never broken the arm tho..