Issues with the Blue Beast. I have a 2006 WR 450. All of the free mods and jetting was done in 2006. I was out the my boys and we were running through this knarly sand wash. I was in third and trying to stay in the power. I could feel the bike surging and lurching in the higher rev limits. I was not red lining it. I noticed the chain was very loose. Limped back to the house tightened up. So we headed back out. This time I was on a fire road in the same gear and about the same area but not as bad. Either time I could not hear anything it I could just feel it. It was like the choke or about to run out of gas feeling. The choke was off and the gas was full on. I have not messed with the jetts in three years so they are good. I took the bottom of the carb off there was just the tiniest bit of something at the bottom. I took a can of carb cleaner and used about ½ of it inside of the carb. Any other suggestions? I’m going to finish putting it back together today and try it out. Could too much spray tack on the filter cause this and if so shouldn’t I feel it in other places as well?