I have a 98' wr400 and I have recently had issues with my bike stalling at low speeds. A little history: A week or two ago I took my bike to the sand dunes. I took a jump and when I landed I lost control of the bike and bailed out. I was fine but the bike had issues starting (the engine was most likely just flooded with gas) and then once we got it going it was running super fast. What I mean is that when in neutral the RMP's were as though the choke was pulled out, and while riding back to the car to call it a day, the bike was running super hot. I figured it was the idling pin that got turned or something in the crash. (is that what it is called?) The Problem: I didn't think much of it at the time. A few days later I decided it was about time to change my oil filter so I replaced the oil filter and put in some yamalube oil (first time using yamalube). About a week later I started it up and it seemed to be running back at normal RPM's without me doing any tinkering, so I decided to take it out with my buddies for some trail riding. Out on the trail it was running super different. First, going into first from neutral I had to let go of the clutch farther before I started to take off. I had to use the clutch WAY more often on the trails, and when slowing down for super tight switchbacks I even stalled it twice. I also had issues going up hills. I would make it nearly to the top and then just lose all of my power, even in first/second gears. The thing is I know that isn't normal because I've ridden these trails many times and never had these issues. I stalled it on some hills that even beginners wouldn't have issues with. I also noticed while going down hills shifting down a gear didn't have the same slowing power as normal. So anyways, I'm not sure if I have given enough information for anyone to help me out but I'm at a loss. I've got no power and it's super frustrating not being able to keep up with my friends 125 2strokes. I used to be the one that just powered up hills like a boss, but now they are.