RE: CA or Epoxy needed for a RTF Trainer ?
RTF assembly is different than most ARFs. The wing halves use metal tubes or pins instead of joiners, and you can just tape or screw them together instead of using epoxy. The tails usually bolt on instead of being glued as well. I've heard of guys epoxying the RTF wings to give them some extra strength, and that's probably not a bad idea (use 30 min epoxy for that). I'd probably just bolt the tail on according to the instructions, though. If you bust up the bolt-on tail components, you can easily buy replacement parts and just bolt the new ones on. If you glue it, it will be more difficult. If the bolt on tail starts loosening up on you after several flights, then consider gluing it.