Badger , the killer B Looks great. one way would be to epoxy a brass tube on the end of the Tail. i cant really explain it without a picture. one 90 degree end goes into the rudder about an inch , then the wire goes , down through the brass tube and down to the gear, the brass tube with the wire is in between the tail end and the rudder bottom.
I think i've used 1/8 th wire with a brass tube over it.