Do Miche bottom brackets require a special tool, or is this one damaged? I just bought a Miche Primato bottom bracket and tried installing it using Park's BBT-5 (the same tool I used to remove the previous bottom bracket, also Miche, but from 2008). The BBT-5 fit into the right hand side cup without a problem, but I had trouble fitting it into the left hand side. I noticed that one of the splines is different than the others. Is this normal, or is this part defective or damaged somehow?

The spline in question is right below "ITALY":



Thanks for any help, I'd like to be sure before I complain to the shop I bought it from.
The OP notes: "Shop agreed that this part is defective, was happy to swap with another one. FWIW the guy there said he'd never seen another Miche bottom bracket with this issue. –  spacemanaki Mar 29 '14 at 21:56"

I just tried a google image search to see what they look like because I'm not familiar with Miche. The pic isn't perfect, but does give an idea that the splines don't have a taper on them like yours. Glad you were able to sort it with your LBS.