OK, I just thought of something. We know that a bow performs its best (more efficient) when maxed out, right? So, considering the fact that my string has stretched, and my bow is maxed out - producing 64 lbs instead of 70, is this bow performing at a higher level than the same 70 bow set at 64 lbs, or is the performance the same due to the 70 lb limbs? Like I said - I' m new at this - but it' s very addicting.