Thanks. I guess that I did not realize how low that the Husqvana type roller guide fits onto the bar. I suppose a guy could file his roller guide to fit the vise too!
Tried a Granberg type guide on these yet? The opening on these varies with the model, but on the current one I have it appears to be 0.29 inches. It can be filed wider (up to 0.4"?) by removing some cast-in bosses. But now I am thinking that the groove would have to go quite low to accommodate the frame and set screw. And that a device designed to clamp onto (as opposed to simply straddle) a bar with a fixed groove might not be compatible with a vise that opens and closes.
Philbert