Mathews LX 61 lbs. with limbs bottomed out. Have put about 400 arrows thru it since I purchased new last week. Measured brace height and alxle to axle. Brace was 6 3/8" and A to A was 36" .Would I need to twist or un-twist buss cable or should I make adjustement to string. It feels about a 1/2" long so this would put me back right if I am assuming right that this adjustement will also shorten my draw length 1/2" when I shorten A to A by 1/2" and add 1/2" to brace. Don