Hi.
I don't think that you know what I meant. I meant that I want to buy the 4Star as a second airplane, and I thought, why not trying to do with it some 3D maneuvers? Then I asked here if it can, and the most of the people here told me that it can do a bit 3D. Later, after I'll be more spetz (lol-my nick. BTW it had to be "-Spetz_Naz-"), and will have experience in 3D (again, a bit experience, or maybe not bit, because I'll buy a sim transmitter and will practice at the simulator) I'll buy TopCap or Edge funfly.

P.S.
Nobody answerd my question, so:

"I decided to buy the kit of the 4Star (40) and do what you all said, I'll modify the control surfaces (elevator and rudder) and will do couter balances. But still I have a question, how should I do it? The kit contains the exact length of the beams to build the control surfaces. So what should I do? Should I buy a longer balsa beams and then make a bigger control surface? And how should I make the counter balance? Should I need to take part of the stabilizer and stick it to the control surface?

Thanks, Elad."