RE: E-Flite AT-6 Texan 25 ARF
The assembly starts by installing the metal support tube into one of the horizontal stabilizers. You need only to drill two 5/64" (2mm) holes and secure the stabs with 3mm x 10mm self-tapping screws to complete the assembly step.
All the control surfaces and horns are pre-installed for you. Notice that alignment of the stabilizer halves is automatic and the seems where they meet the fuselage are perfect.