Talking with a fellow at work and he claims his bows draw weight is adjustable from 40lbs to 70lbs--has there ever been any bow that has these features?The reason i'm asking is that he said he has it set at 47lbs,but it will go to 70lbs.I assumed he had a 60 cranked down and advised him to be careful about backing it down too far and having something go wrong real fast--you'd think i told him that i had the hots for his mother the way he acted after that!