Well it also depends on which type of willow it is, if its kashmir that can be expected of it. But, by the sounds of it its an english willow bat, I think your main concern is that your bat hasn't been knocked in long enough, and thats why you have cracks/chips on the blade. Pre-Knocked in doesn't mean much really, you would still need the full six hour treatment afterwards (I would reccomend). Personally I have a Kookaburra Bubble kasmir willow bat which I used since 1998 still hasn't broken, then I bought a Kahuna Predator kashmir willow, due to it not being knocked in properly it broke so I had to buy a new bat. So I then proceeded to buy a Kookaburra Kahuna Twister LE 'pre knocked in' knoced it in and have been using it for the last three years. Why I didn't return the old Kahuna is that South African retailers all have the same policy, all bats come with stickers as follows "Due to the nature of this game and the materials used, we are unable to exchange broken equipment."