Please review this article. You fella's in doubt, this may help. All i did was a Google search so you can do that too if this does not convince you there is risk using resin core solder for a mechanical joint. Why take the risk when risk can be eliminated or at least greatly reduced by a few simple measures and using the correct materials with the right process. It is almost funny,,,, but not quite, as i would hate to see someone that is not very experienced loose that nice model.
http://www.gregorie.org/freeflight/s...soldering.html