I was riding with a very large guy many years ago when he got out of the saddle after a stop sign and snapped off his Campy crank. I believe he swore off Campagnolo after that.

I don't understand the hate for the Campy BB sleeves, which seal up quite well, though I admit the accordion style is better. If Campagnolo deserves criticism on this, it is in continuing with the same design long after better ideas were out there. The biggest problem with the Campagnolo design is that the long section should go on the fixed cup side and it can be tough to get a used sleeve to mate correctly with the cup after it's installed. Yet you can't get the bearing retainer in place with the sleeve installed, and you can't use the 793/a fixed cup tool with the bearing in place. If you get all the pieces to fit up correctly, the system works quite well to keep junk from the inside of the tubes out of the bearings.

I think the best sleeve I've pulled out of a bike was just the other day when I disassembled a BB on a Bertin and found a piece of steel beer can nicely fitted, cut so that the motto "The beer that made Milwaukee famous" was perfectly centered. Schlitz--Breakfast of Champions!