Hi everyone:

I have a problem with my DLE30 side carb version which has 253 flights in it.

Before I begin this is the set-up I have to fuel my plane.. In my gas can I have 3 fuel filters : one inside, one before the fuel pump and lastly another one before it goes into the plane's fuel fill up line.

Here's the problem:

It's begun after these last 6 flights. After you start the engine up and wait the 10 seconds for it to heat up before throttling up. in which its in idle. I start to throttle up and as soon as I get close to high speed the engine starts to hesitate like either no fuel or air is going into the engine at high speed.. yet you throttle down back to idle it stops.. do it again be it slowly or suddenly throttling up and does the same thing.

I checked the carburator's fuel filter and its extremely clean, some one int he club recomended I blow some air into it to make sure it wasn't pulgged up beyond that.. did it and nothing. someone also suggested to close the choke and open it as soon as the engine begins to sputter in high speed.. I did and it worked but 2 flights later problem again appears..

During all this I had not moved my needle setting as the plane is perfectly tuned.. I moved them a bit specially the high speed it helped a bit.. then 2 flights later yet again the problem appears...

Does anyone know what in the heck is wrong? how to fix it?