will planes warp if not built in a resonable time?

You shouldn't have any problems unless you took the parts out and didn't get them back into the box straight.

I have a number of kits in my garage that I've initially opened and poked through and not touched otherwise in 15-16 years. The PT-20 kit I just pulled out as a father/son project didn't have a single warped piece in it. Other than the instruction book being pretty yellowed, it was good as new.
I've got a Sig P-51D kit in as new shape as well and I'm pretty sure that one's been sitting for as long as the PT-20 kit was.. (That's next summer's build)
I think if you keep the boxes closed and don't expose them to extremes of heat and cold, they should be ok. Mine are all stored flat. I think standing them on end might induce warping... My $0.02

Just take them out and leave for a few weeks in yoir buold area to allw the wood humidty to settle to what its likley to e once built.
Wood moves foirever as the humidity changes: The trick is to machine, build and use it is the same sort of humidity regime.
Heat per se does nothing to warp wood: Its te changes in relative humidity that accompany the temperature that make it warp.
I've seen firniture that curls up in summer and flattens out in winter, every year, like clockwork :-)
Outside, winter is the highest humidty, but indoors humid summers are worse..because the winter air gets heated and RH drops on heating..

Thanks gang... I was wondering if i wasted my money or not... I promise to get out there and build more! thanks

I would store the planes in a low humidity environment
-- freddy warbir ----------------------------------------------------------------------- freddy warbird's Profile: this thread: