[X(][X(] Wooow. That is a lot of weight you added. Before putting the lead, first move the battery and reciever towards the rear of the airplane, also make sure there is no gas on the tank, allways balance with no fuel on the tank... Allways try to move things around before adding the lead......

Regarding your misalignment, Im going to guess since the skyraider is an ARF, is that you glued the stab (rear little wing ), a little crooked. That will affect the airplane a little when applying the control surface (elevator), It will make it yaw just a bit.