I have serviced 1996-1999 YZ 250 and 2003 RM 250 forks quite a bit, this model has a similar Kayaba 46mm fork to the 2001 RM 250 ( I think there was changes made to the fork for 03, but the seal basics should be the same ). I would consider replacing the dust seals as well as the fork seals. I have over looked worn dust seals on these forks and ended up damaging the oil seals in a short time. Also inspect the fork bushes, the bike is a few years old now and these parts can be worn. If you are planning to save money maintaining your bike yourself, buy a service manual, that will have step by step guide to rebuilding the forks. Just the fork seales and dust seals should set you back 50USD including oil and all seals. Some after market seals are more expensive than KYB original parts, not sure which would be better than which, but I go for the KYB items first ( after market only in emergency for me!! ).