I have a short draw length as well. My first bow I bought new was a High Country Sniper when High Country was a young company. The dealer was a real used car salesman. This was where I learned about short stringing a bow. He put a shorter string and cable on it to meet my draw length. This also reduced peak poundage of the bow. My bow peaked out at 63 lb on a 65-80 lb bow. Try another bow shop and have them order you a new set of cables and string to match the bow. If is still not up to poundage then it has to be the limbs have a problem or are not the correct ones.

Good luck