Some of the guys drill there sealed bearings so they can lube them, I haven't yet but i want too cause the idle side guide roller is the one that wears the quickest due to the constant water lube, it eventually eats them up. the drive side guide roller bearing last 3 times as long. Yeah the brass bar brake is not the best design but it works for awhile i prefer a slow stop, i bet on the newer TK mills they have a different design.