Rough trails, I'm finding out. Friday afternoon blew out my front tire. Got that fixed (and replaced the odometer that fell off as I was pushing the bike 2 miles back to the car, never to be seen again), and Sunday afternoon blew out the back tire AND broke the chain in half. I'm now told by my local bike shop that my bike just sucks and I'll destroy it at BLORA. So looks like I'll be trying Stillhouse Hollow this afternoon. Don't want to drive to Cameron Park East in Waco. I'm afraid I'll fall on a broken crack pipe or a sleeping crack head. Has anyone ever bought and used the solid rubber tubes? I've heard that they're cumbersome, but I only do off-road trails and I'd rather deal with that that new slime tubes every week.