I just finished a top end rebuild on my 2001 KTM250 exc. When it was apart I cleaned off the powervalves, they were very dirty. I also rebuilt the carb with a new seal, jets and float needle. I am using the stock jet numbers. Before I took it apart, it would not hit the power band in 1st and 2nd but would hit in 3rd gear, 4th and 5th. Also on a cold start, or when it was running out of fuel it would rev up very high. I got around to starting the engine today using red line 2 stroke racing oil and 93 octane without ethanol at 32:1 ratio. When i first started it, it revved up just like before. After it warmed up and settled down I took it for a ride, it was still having the issue in the 1st and 2nd gear, it feels like it hits a certain point in the rpm band (around midrange) and the power cuts off. When I first filled it with gas, it was leaking out the overflow tube coming from the bottom of the carb, I tapped the carburetur with the end of a screwdriver and it stopped. After running I pulled the plug out and it was wet with fuel this leads me to think that the float may not be right, I will try to check that later today. Any ideas on what could be the cause of this?