ORIGINAL: YellowAircraft
Hi,
Thanks again, everyone. Your heat theory turned out correct! I thought about that earlier (even the oven method), but I had a bad experience doing that with another sheeted-foam structure. What I ended up doing was using a ''hot box'' of sorts. I put the parts (there were 12 parts in all) in a parked car with the tacky side up (fortunately, this only happened to one side of the parts

) and let it sit there all day from sun-up to sun-down. No more tacky! You can bet I won't be making that mistake again...
Yea, there is definitely too hot! Also, I think that UV rays help too, so the "hot box" seems to be one of the best ways to do it...
Bob