I'm playing the NA Xbox 360 release. I've noticed that level 15 of the weapon Expertise skills (Unarmed, Single-handed, Dual-wield, Sword & Shield, and Two-handed) are difficult to acquire.

With a new character who started in FoV, I'm only able to get Dual-Wield to level 15. The other skills cannot be trained by any of the three trainers (Battle Tower or the two Ministry trainers). Is this because I maxed out Dual-Wield on the character creation screen before starting the game?

Additionally, it seems like it's apparently impossible to train any of the Expertise skills to level 15 on a character who started in ED (e.g., played through the entire game to FoV).

The other two skill cap increases FoV offers (Destruction and Lockpick) seem to work correctly.

So are these skill cap boosts glitchy, do they just not appear due to a programming error, or are they fully intended to work like this (difficult to get on FoV characters, impossible on ED characters)?