I put a tail wheel on my kadet sr by putting a 1/8th plywood doubler on the bottom end of the fuse & mounted a du bro tail wheel assembly & put the steering arm at a 90 angle to the rudder & put a ezjust connector on the rudder horn next to the existing one & cut the covering on the stab next to the fuse & put a 1/4" piece of hard balsa about 1/2" wide with a 1/8" slot cut into the balsa & run the wire (2-56) down thru it to the steering arm. It works well & is very easy to set up & adjust.
We have 7 or 8 kadets in our club & most have brakes on the front wheel that works off the elevator servo arm.....when you use down elevator it puts the brake on...you can set it up easy but if you set it (adjust) too tight you will loose some down elevator. Use a cable to pull on the brake on...you don't need to push because when you let up on the elevator the brake relaxes. The attach point (pivot) is by installing a bolt thru the nose gear coil. Use a 1/16th piece of aluminum about 1/2" wide by 3" long with a twist in it just below the coil....drill a small hole near the top for a clevis & when you pull (down elev) the brake comes on. KADETS are fun airplanes...........pilgrim