Having problems with my 08 82Airborne. It a great bow but for some reason it will cork screw at 40 yards. I have a whisker biscuit and I shoot a 398 grain Carbon Express arrows with 2'' blazer vanes tipped with 100 grain T shuttle. The best group I can get is about 6'' at 40 yards where as with all my other bows I could get at least a 3''. I do shoot alot maybe 60 times a day unless I'm hunting.