I have a Yonex Ultima 99 pro and it is like so slippery. Why is it this way? Either the many badminton courts I go to in Singapore is too dusty or the shoes have an uncanny ability to trap dust. In any case it's not a really good shoe... relatively zero cushioning and all that. Guess you get that kind of shoe for that kind of price. Need to get a new pair soon but for the moment, any ideas to overcome this problem? Should I play with track shoes?