I made a F18 as well.
What about your motor, prop, battery and servos?
I used a hacker A20/22L with an APC 9*6SF prop, the battery is a 3cell 2200mah 15C and the servos are towerpro 9gr.
This is mine:
http://www.baronerosso.it/forum/aero...t-parkjet.html
thanks