The Sherline Crosslide Anti-Backlash Lock Instructions provide guidance for retrofitting earlier Sherline lathes with a backlash adjustment feature. This enhancement, introduced in early 2014, is designed to minimize excess play in the lathe crosslide, thereby improving precision. The mechanism involves a round, knurled brass lock nut on the leadscrew, which is tightened against the saddle's side. This action pulls against the threads in the slide screw insert, allowing for the adjustment of backlash to the desired level. Once the adjustment is made, a knurled lock wheel, secured by a button head screw, ensures the lock nut remains in place. The kit also includes a drill guide block, which assists in accurately locating the hole that must be drilled and tapped in the lathe saddle.