Thanks for the info ,I'm so sorry for be annoying but this jet is the only one with so much problems I ever own and I'm just super paranoid to maiden before I have all the possible info about ,is your fuel tanks all in the cg area just like I changed ,and this help 100% for normal taxi when the center fuel cell was forward in front of the former just under the turbine the jet was just totally not stable on the ground ,with the mix I have programmed to the jet I have only one flaps position about 15mm and 3 position alierons about 15-20-25 mm and a lot for the elevators in tailerons mix maybe 45-65-80mm and the going even farther when high alierons ,will you please maybe post picture or confirm the fuel tanks position and the surfaces throw ,if you think I should changed back to regular flaperons and elevators mix I will do the ,I mostly fly my eurofighter rafale and super scorpion so this type of airframe is new to me ,once more time thanks for the help with the f-35 .