guys, whats up with this easy sport 40 from great planes. they give you a choice to build it as a tricycle or a tail dragger version. i built it as a tail dragger. one i finished the plane i weighed the plane and it was within the weight range. i tried to balance it an she was all tail heavy, no blobs of glue no added weight in the back. if i decide to add more weight in the front, now she will be even heavier. any ideas on this?!?!?!?!?!?[:@]