Too late, already made the mistake a while back.......
I noticed the damage right away while adjusting the tension on the clamp, so not too bad and no need to repair as everything still works fine....
It took me a little while to understand why the festool clamps don't do this.....I believe because the force is spread over several inches of the clamp that fits in the extrusion....
I came up with an idea to use some keystock and tap a hole, but never got around to it...Also eyed up the joiners for my rails, thinking the same thing to tap a bolt thru, but they didn't seem wide enough.
Do you know if the rail connectors are the same as the table connectors?
If the table connectors are a bit beefier, I'd rather use those.
Also, did you put your bolt in the center of the joiner?
Thanks, Greg