I have a Sjoberg workbench. While it's not perfect, by and large it does a decent job. It has a side and end vice. I use the side/front vice for joinery and most everything else. I rarely use the end vice for anything other than holding a bench dog. However, for this use, the vice racks and I'm always trying to find a spacer that is somewhere between 1/4" and 4"...
I'm curious is anyone else has faced a similar issue and has a solution. Maybe retrofitting a simple tail vice of some type or perhaps some innovative auto-spacer to prevent racking?