Hello there! New guy here, I'm Jessie. I'm a machinist at a small foundry and machine shop in SLC, Utah, USA. We have recently purchased a Scharmann FB 315 HBM and are in desperate need of a manual for it. I've reached out to the current owners of the Scharmann name, and due to years of the business changing hands, they do not have any copies/records of the manual for it. The machine seems to run great aside from one "small" issue, the built-in ro-tab will not lock down. During cutting, it wants to rotate. This is obviously not ideal, and with no drawings or diagrams at all, we are a total loss as to where to start looking for the solution. Not even sure how exactly the table lock functions. Any help would be greatly appreciated! Thanks