I'm new here and have just purchased a 98yz400. The bike is stock and needs chain and sprockets. I am going to put on an Oring chain and Fredette guide, but wondered if any of you have any suggestions on what sprockets to get. It has 14/49 on it now and I race hare scrambles in the tennessee area. It seems like going up on the rear a couple would help, but I would like some input from other yz owners. Thanks in advance.