I'm Building A Tiger 60!!!
I actually had a Fultz double wire strut on mine and a fours stroke and had to add lead weights to mine. I believe the tail dragger is much more fun to fly and less trouble though. Why not add a larger battery pack in the nose or something like that which is usefull rather than a lead weight. You will love the airplane. Maybe move the servos etc a little forward. I had a friend who also built one and the same result. Tail heavy. Now maybe ligher wood in the elevator.