It would be awesome if this tool's owner, or someone familiar enough with it, would pull the wheels and give it a good cleaning. I did some work on it a couple nights ago because it seemed to be tracking badly, and the blade was riding mostly out in front of the blade guides. I vacuumed it out pretty good, found and removed a bunch of slivers of wood wedged in the upper guide, and adjusted the tracking as good as I know how. Tracking is much improved now, and it should be much less likely to throw the blade off the tires. It's still got a bit of vibration, probably from sawdust caked on the wheels, and I couldn't clean the back side of the wheels. Seems like the blade might be rubbing more than it should on at least one of the guides, too.
I'm not knowledgeable enough with the bandsaw to be comfortable removing the wheels, or making adjustments to the blade guides.