Barile,

Tiller doesn't have to be dead even. It really doesn't have to be even close, but that's another discussion. My point is, you're not going to mess up some "mystical" tune by turning one bolt and not the other. Just as I said, turning one bolt (and, remember, I'm talking about a FRACTION of a turn) will simply rotate the riser (a minute amount) and have the same effect on nocking point as raising/lowering the rest or physically moving the loop would have. Using the limb bolt is just an EASIER way to do it, because you have such "fine tune" control. Also, as close as you are to being perfect, you don't need any more than a fine adjustment.

Tiller controls the angle that the riser sets in your hand. You won't throw the entire bow "out of whack" if you move one bolt and not the other. Let's say a bow is "tuned" at even tiller. If you tighten the upper bolt a large amount and it "throws it out of tune", you haven't disrupted how the bow operates, you've just 1) raised the nocking point and 2) changed the appearance angle of the arrow compared to the shelf.

2) has no effect on tune; it's just a matter of appearance. 2) also changes how the bow "sits" in your hand at full draw. Some people adjust this setting to where they feel most comfortable.

1) does have an effect on tune. The nocking point just moved up the string. The bow is now "out of tune" because the nock height changed, NOT because the tiller changed. The bow can be returned to the original "tune" by adjusting the rest or moving the nock point to remove the amount that the nock point moved up due to the tiller adjustment.

Now, I said all that to prove the point that you're not going to do any damage by turning your upper bolt 1/16 turn. You are not going to have to go through all that I mentioned above, because you're not going to turn the bolt that much. You just shouldn't be wary of moving away from even tiller. (No more than you'd be wary of moving your loop down the string a FEW THOUSANDTHS OF AN INCH, because that's how small a change we're talking about.) In other words, don't sweat it.

By the way, with the bare shafts hitting low, and your arrows seeming to be adequatelty stiff, I'd say your problem (if you want to call it that) is the nocking point is slightly HIGH. The adjustment I suggest you make is a TWEAK tighter on the lower limb (or a TWEAK looser on the upper).