Front alignment slots too big - B5 Systems Handguard - M-Lok

My first review of this item was before I tried to install it. The front slots that align with the handguard cap are way too big. Nearly twice the width of a standard handguard. The casting/milling on the slots is horrendous. The rest of the handguard is fine, but somebody dropped the ball on the slots. The slots are what keeps the handguard from rotating. With too wide of a slot, guess what? The handguard rotates.