i have a total nv and the center i bowl at the other few ppl who own an nv say the same thing that its lost all its hook etc....but mine is still hooking just as good as ever, some people buy a ball and dont consider that every single time that the ball goes down the lane it sucks all kinds of oil right into your track, if you are a consistant bowler and you have all that oil in your track its not gonna perform the same!!! here is what i did with my nv, i am pretty close with the owner of the proshop, i had him take a wet 1000 grit abralon pad on a ball spinner, then shine it up with track polish, but the key to that is if you are gonna shine a ball up you have to know what you are doing or your wasting your time, you have to apply alots of pressure while its on spinner, it will get the ball nice and hot !!! thats what will get your ball back to that tacky out of the box feel...