Aileron and vertical stabilizer

I cut the tail surfaces to the shapes I want them to have, but now they have unsightly openings.
How can I move the points along the top edge of the vertical stabilizer to line up along the longitudinal axis, and
how can I get the horizontal stabilizer upper and lower surfaces to meet along a horizontal plane?
ThanksKi-8 06.skp|attachment (5.9 MB)

Use the move tool. Click on a point, set your axis to red, and drag the point mid way. That should work, but if you are stuck on the vertical plane, use Vertex Tools from the Extension Warehouse.