Board Thread:Questions and answers/@comment-27923854-20160626215531/@comment-27306930-20160705185910

The misaligned bolt holes are due to a misaligned rack and pinion on the priming mech. Unlike other blasters that have a single bolt sled, the Centurion has two independent racks, left and right. When reassembling you need to pay attention to the position of the lower (right I believe) rack, and align the top rack and pinion gear in the same relative position. You can tell when you've got it right because the bolt holes will line up.

This is the worst part of reassembling the Centurion IMHO.