I was able to install a 500 class boom and tail pitch assembly on to my Multiplex Funcopter.
This is the maiden, no issues. There's no slop in the rudder like there is in the stock tail.
I had to make my own gear tube, to install the tail pulley from the kit i sell. You can't use the stock tail gear because the stock 500 tail pulley has too many teeth.
Here's the very first lift off with the modification. Since this video I have taken it outside, and it flew GREAT!
I will need to shake it down further (make sure everything is loctite etc) before doing a full flight.
Here's a video and some pictures