Stabilizer
Problem 1: the stab was made up of many small pieces and was to be aerodynamically shaped per the real one. As designed it is very thick, labour intensive and not very strong.
Solution: The new design is flat, strong and simple. Less than half the number of pieces.
Problem 2: this is a static scale plane and was not designed to fly. To make it flyable, the tail feather area should be increased by about 15% for stability and directional control.
Solution: The leading edge was moved forward about 3/8 " and each tip was moved out about 3/4". You can see the LE balsa was moved forward versus the shaded leading edge on the plan. The trimming will be done after the fuselage is finished to make it fit in the stab slot of the fuselage.
Let dry overnight.
Frank