Gazzer
Dont worry

...not the end of the world

...Did my first set of foam cores a couple of weeks back, i was really twitchy about the whole process [:-]..Z-Poxy 30 min stuff... Two FLAT, HEAVY boards to put under and over the cores are a must ...
and a couple of really heavy weights to put on top of the whole lot....turned out Fantastic...
Grab some new cores off Kerry..Make some Skins up...pop up here... We'll have a Saturday up in the loft /workshop....

I was going to make a spare set of wings up for the AV8R..we'll do that too..!