For all practical purposes, the Apex #13 is the exact same bow as the Pearson Colt. It is 62" AMO (with recurves, bow length is measured by following the contours of the limbs, not straight line between the tips), so buy a string that says it is62" AMO.Brace height should be 7 1/2 - 8 1/4".

Recurves have an unlimited draw length, not a specific draw length like compounds do. The manufacturersset 28" as the standard draw length for rating a bow's draw length. If your draw length is shorter than 28, you'll draw less poundage. If it's longer than 28, you'll draw more. The old formula for estimating how many pounds per inch you'll gain or lose per inch of draw length is: Draw weightdivided by 20. So, your 45 pounder will gain about 2 1/4 pounds per inch, meaning you'll be pullingabout 52 pounds @ 31".

At 31", you're likely torun into a bit of 'stack'. Stack is the point in the draw length where the bow starts gaining significantly more pounds per inch than itdoes before. Your bow might gain 2 1/2 pounds an inch until it hits 30", then suddenly start gaining 4 pounds per inch. So your actual draw weight might wind up closer to 54-55 pounds.

The problem with stack is the bow won't shoot any harder at 55 pounds than it does at 50 pounds. So you draw morepounds more without getting any benefit at all from the extra draw weight. That's why custom bows are so nice. They are made to draw without stack to the customer's draw length. That's not saying your bow won't shoot well for you. It will. It's just something you need to be aware of.

Don't put a longer string on the bow. That will brace the bow too low, make the arrows fly crummy,you won't be able to shoot it accuratelyand it'll make a whole lot of noise. Bracing a bow too low can also damage the limbs.

String that sucker up and have fun with it!