Mine also broke in the same spot. I suggest using some zip ties to also support the tool from bouncing and flexing, luckily another rider found mine and returned it to the start of the dualsport event I was in.
Has anyone ever broken one of these? I got one of those mega tubes like iceman has and the mount by the cap busted first dirt ride with it on. I had it strapped to the rear of the cycleracks like I had my smaller one. I don't think I had it over weighted either, I had a tool roll with 3 wrenches, a 1/4" ratchet with a few sockets, a screwdriver and a pair of mini vice grips in it. It guess less than a pound.
I got mine from thetooltubecom as well. I also ordered one of his tool rolls, it's a very nice piece.
Here are some pics of it busted up.
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What I had in it.
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