Volfy, I believe I know the person you are speaking of with the Saito 1.80, if its the same person, he is a member of my club. He purchased the SS60 after test flying mine
He had to make several modifications to the plane in order to handle the power that the engine would be putting it through. I have not yet seen the plane but have heard that the control surfaces have been enlarged.
I made the mistake of purchasing the Tower Hobbies .75 and placed it on mine which I will do again. They are junk!
Randy