ORIGINAL: lez1troubles

Befor you start screwing around with the carb like alot of people have told you, could you give us some other info???
What fuel are you using??? The °nitro in the fuel will also have alot to do with the performace of your engine.
What glow plug are you using as this will also enhance the performance of your engine. It could also screw up the performance of your engine.
I see your running a small .15(2.5cc) engine. I have a Tamiya NDF01 that likes to run on Sidewinder 25° fuel usung a O.SA5 plug.
In the beginning I tried sidewinder 16° but it would just bog down at medium to high revs, tried all sorts of tuning tricks but nothing was helping untill I filled the tank with higher percent nitro. Runs like a mad beast now.
No problem with sealing nothing.
Keep us informed as to how you get along.
P.S.
What is the temperature of your engine during use, it wants to be around the 120°C.