Heard this one a while back. Wear them around the house, especially if you have some pets or something to get some extra dirt and dander into the soles. I did this with the last pair I bought (SST6s 2 years ago). Wore them around my house for a week before I ever hit the lanes with them, and they were perfect from game one. However, I have never been that sensitive to approaches or shoes or anything. Or just practice in them. There aren't really any tricks. Even ten to hundreds of games into the new soles and heels they wont feel the same as the old ones, but they will feel good after a while. If you just use the new ones without wavering, eventually you will try the old ones, and they will feel different, but in a bad way, and you will prefer the new ones.