Here is a way to find the centershot without taking the bow in and having it set with a laser. You'll need two (it's easier with two) small levels. You will also need to support both ends of your bow limbs and let the riser hang freely. I use a press, but you don't need one. Next, get an arrow and put the heaviest point that you have on it. I use a 185 grain head. Now make sure that the riser is perpendicular to the floor. Check with the levels on a few different points. Most of the times I will use the point where the limbs (back) connect to the riser.Connect the arrow to your nock and let it hang freely. Move your rest appropriately. This is the centershot of your bow (or very close to it) at rest. This is a great starting point for tuning. Also, make sure that the arrowlines upto the arrow rest wholes drilled in the riser for the up/down alignment. If your bow has two wholes, I'd draw a line between the two right across the riser.