Hi guys, I have an opportunity to pick up a 1999 yz400f with 15 hours on it real cheap. Should I? The bike looks and runs awesome. I also have a few questions. I have heard that these bikes are very durable because of the 5 valve design, and the stainless valves. And are there any problems with the bike from the factory? I really want this bike, but I also want to be sure that it is the right one. Any other questions that I should ask the seller when/if I get it? And since I just blew up my yz125 today I need something else to ride while I fix that, and my dad wants me to get a 4-stroke. Does anyone have one? And do you like it? Thanks.