I have a Great Planes Cherokee 40 that I got to maiden the other day. It is my first plane with flaps and a larger one in my collection (mostly 1/2a's). I had two problem issues that almost caused the first flight to be a disaster. First of all the plane pulled hard left and I had to add all my right aileron and rudder trim to fly straight. I think I have fixed that tonight. Since I wasn't the one who built it (just covered and final assembly) I realized there was no right thrust built into the motor mount. So I think I got that squared away. The other thing was that it required all of my up elevator trim to fly level. Initially before the first flight I added a 2oz heavy motor hub to help balance the plane to the specs on the plans. I balanced the plane without fuels and it was just a hair on the tail heavy side according to plans. After my first flight for some reason I tried putting another ounce and a half on the nose. Right on spec now and the second flight of course had the same problems. Thinking back to my early mistakes in flying I remembered that with a tail heavy plane usually you had to add down elevator so I am guessing that I am actually nose heavy and the CG on the plans is wrong. The plane landed great with the flaps but does seem to take a bit to get off the ground and doesn't want to naturually lift like many of my other planes which also leads me to believe that it may be nose heavy. Does this sound right to everyone? Thanks for any advice in advance!