I've had both of these with my 2011.
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Number 8 – Cracked grip
On STI/SV guns, check your grip often especially if the magazines you are loading into the gun have little or no play in the bullets. Cracks usually start around the magazine release area and at the top of the grip at the front edge of the checkering. Cracks can cause all sorts of mystery jams, hammer following, and magazines to stick. If you do notice such cracks, it’s time to replace the grip.
Number 7 – Loose screws
Screws that commonly come loose include scope mounting screws, scope adjustment screws, grip screws, and the rear sight set screws. Check your scopemount screws often especially the one furthest to the rear on the scopemount. This is the one that usually comes loose first. On a C-more, locktite the set screws, tighten the windage set screw down snugly, and then never touch it again. You can still adjust the windage without loosening the set screw. If you repeatedly loosen and tighten this screw, you will eventually crack the body on the C-More. Put some locktite on the elevation set screw and sight-in with the set screw tight. If you tighten it after sighting in, it will change your point of impact. Check the set screw on your rear sight – loctite and keep it tightened down. Also locktite your grips screws. Loose grip screws in the STI/SV platform can cause hammer follow and other problems similar to having a cracked grip.