Hey PHAMIL1 my thread which is only about 14 post down in this forum could be helpful,, you are facing the same problem I am,, my plane came in at 20lb 3oz's on the scale,, so I am putting it on a major diet (engine and all carbon),, I would love to get it down to 17ish, I think my problem is wing loading,, is to high, any way read there is some good comments in my post,, hope this helps
http://www.rcuniverse.com/forum/m_3541968/tm.htm