Rafael, It was actually John my father was talking with. I have a Big River and love it to death.
Tonight I shot a round at the local club and found the string had stretched ever so slightly. Enough to notice it shooting,
Since I was twisting it up anyway, I decided to go up to 8 1/2 from the belly of the bow. I moved it back down to 8 1/4 inches and have to say the bow is still smooth as can be, absolutely no hand shock but I think my arrows flew faster and flatter. I think I am gonna keep it Long for now and see how it handles longer shots in the morning. I was only shooting 15 yards.
I think I need another Big River, as much use as this one is getting, a back up isn't a bad Idea. I want a take down model anyway.