Yes the slipper bearings are definetly lower grade... But after 6 runs I checked them and all seems fine for the moment... In the event that I need to change them, ACER racing sells high quality bearings for 3-4$ a piece with free worldwide shipping. That's probably more than what your bearings would cost, but for overseas guys like myself, it would probably come out the same... Maybe for local racers it could be interesting, depending on what they would cost...
Cheers!
