Great work on the DH2 George!
I also had a bit of trouble with a slight misalignment of the tail due to a twist on the boom assembly. It happened after the glue had set on the rudder & elevator assembly. EZ Line was used for the rigging. I ended up routing a stronger line of invisible thread from the tail through to the elevator control horn by the cockpit, pulling just the right amount of tension to align the tail, then securing the line with drops of cyano at the wing pulley and control horn.
Cheers,
Gary