I think the floorboard is the stop
The pedal cannot be pushed further down than the level of the floorboard. Because the pedal is removable, I'm able to set the level of the pedal such that I can control the travel. This is to say that if pushing down on the clutch pedal 5 inches is equal to 1/2" of travel at the clutch arm, I can reorient the pedal on the spline to allow for either more or less travel before my foot reaches the floorboard and can push no further.
When I set it up, I measured the distance that my clutch cable pulled the arm, and set it so that my foot pedal would pull it the same amount.
To be technical about it, it's POSSIBLE for the pedal to travel further, but I'd have to put only my heel on the pedal and slide forward on the seat to get my leg further forward than the floorboard and drive it down with my heel another few inches. It's never happened, mainly because I'm busy driving the motorcycle lol.
As for the bearing, I have no idea exactly what's wrong until I open that cover up. But in the mean time, I've got another bike I'm more interested in working on so this road star will sit until I feel like fussing with it again.
I'd honestly sell the whole bike for $2,000 at this point to fund another XS650 build, I just enjoy that platform more lately. Of course I'd fix the clutch prior to selling. I know it's set up in a strange way, so consider it a parts bike (that runs and drives), but even for a parts bike I think it's a decent deal.
Here's what I'm riding lately