well my first knight rifle was a wolverine on of the combo kits and i had it shooting about 1 1/2 to 2" groups at 100 yards and never had a problem with it i just thought i had to sell it and get the newest and best thing but i' m telling you guys i may have not have tried everything but i have tried alot of stuff and this is going on the 3rd year that i have had this problem and now i have no confidence in it so i may just buy me another kit.