How’s it going fellas? So I have an 02 400ex and last Saturday about four hours into riding I noticed that when I was at WOT it wouldn’t really come up in the RPM and seemed to stay steady at roughly 3-5k RPM. It happened randomly and I can’t figure out why. Has this happened to anyone else? Here’s the specs- 440 big bore with possibly a stock cam (didn’t really pay attention when I was putting it back together. I bought the quad in five million pieces) I know for a fact the timing is right and I know for a fact my clutch is good. Put a Brand new plug in it right before I went riding Saturday. And I’ve rode it pretty hard for about twelve hours total and never had a problem until this. There’s no smoke no back fire no bogging problem and it idles perfectly fine. It fires up as soon as I hit the start button. It just seems to stick at 3-5k RPM like I had previously mentioned. Any ideas?