ORIGINAL: combatpigg

The number #1 reason why guys think model building is drudgery is because they choose methods that make it more work than need be. Too bad, because with the wide array of products out there, it has never been easier to build quickly and light.
Use medium CA for everything that you are in a hurry to put together, including gluing in the firewall. If the model has good joint design, the CA will be stronger than the surrounding wood. I think using Zip Kicker makes CA more brittle, not sure if that notion is chemically sound.
Epoxy is best used as a fuel proofer.
If you want to use a glue with good resiliency and fairly fast drying time, use Titebond or Elmers wood glue.
Whenever you are gluing end grain balsa, make sure that the end grain is well saturated...don't use thin glue of any kind here, it soaks back into the wood and leaves the glue joint weak.