This past week end I did some dealing and wound up with a 98 WR400f. the bike was dirty but cleaned up OK. Tires are fair , chain and sprockets are great . Oil looked good but changed it anyway and filter was perfect. It looks like the bike has been rode a lot but the big stuff had been taken care of. I asked about the valves and he said he had never checked them. That is the next thing on my list to do. So far I like it. It will smoke my DRZ. I have around $1000.00 in it. Do you guys think I did ok. Also anybody have a guess to the size of the aftermarket tank on it?