Yep, sounds like mine. For example, if I am say taking off, engine under load, the plane pulls to the left. If it is just cruzing along, no problem, so i am going to add some more right thrust to mine. I had read somewhere that it needed about 2 degrees of right thrust. Currently I think mine is somewhere close to that, but I still need more. Yours sounds like it is in the same boat. Good luck.

m_b