Probably the easiest way to tell if your twin cam is out of sync is you will feel two distinct walls or "bumps" going into full draw. The best way to set your cams is drawing the bow to full draw and making sure your cables bottom contact your draw stops at the same time (and leave at the same time when you let up). Static adjustment with the cams at rest can be deceiving because if you have two limbs with slightly different deflection rates, cams set at rest will reach the wall out of sync when drawn.