I was wondering what the difference between the pro series bow and the gold series bow?

I just bought a Bengal bow and I have turned the tourqe all the way up and measured the draw weight It is just over 71 pounds. I turned it down a half a turn it is now sitting at about 69 pounds. The dealer said it ment my limbs are hot is this true? Will it reck my bow if I tourque it all the way up or should you always turn it down a bit?

Thanks!