I used to think that the string/arrow/sight should all line up when looking from the string side.

With my '03 Patriot dually.. I have to have my sight almost all the way out from the riser for me to hit where I'm aiming. I have the centershot set up at 13/16" and am shooting bullet holes through paper.

After getting it all sighted in.. if you line the arrow up w/ the string.. the sight is much further to the left (right handed bow)..

Is this normal? I was told that it might be caused by cam lean. I know that the duallys need some cam lean to operate correctly.

But I believe the problem is getting worse... And if I change my grip.. it doesn't seem to change...

Just trying to figure this thing out.

That sounds pretty much the same as my set-up.

Where it lines up will depend on where you anchor and how you hold your head. For instance, tilting your head to the side will change the pin position, or anchoring on your cheekbone vs. on the middle of your chin. In fact, if you want to see a really big move in the proper pin location, close your right eye and sight in with your left (for righthander). That will move your pin further left then many sights can even handle.

This is very common on bows with cable guards, especially shorter axle-axle and high let-off bows. As the bow is drawn, the cables take most of the tension as the string lets-off. This creates a moment applied to the cable guard which torques/twists the riser clockwise when looking from above. This brings the pins around a bit and most likely everything lines up at full draw.

Are you using a peep?

yes.. it's a tru peep large...