My Handy Lockup Bar is not working. I took the bar apart thinking that the mechanism might be dirty, but that doesn’t seem to be the problem. Along with the NR-255 Cam Rider, NRS-23 Spring, and NS-399 Block Extension I also found 4 washers. Do the washers actually belong in the lockup bar? It seems that someone was trying to get the Block Extension to work and used the washers to make the mechanism long enough to actually extend the Block. When moving the NR-253 Cam via the handle it does not engage or disengage the Block Extension. I cannot figure out what the set screw does in the NR-253 Cam. Does anyone know? Do you think NR-255 Cam Rider and NRS-23 Spring are worn and need replacing? Or is there another problem I’m not understanding? Any insight would be greatly appreciated!