My concern with using a food dehydrator has always been that while it's a great way of removing water, it may not be the best way to cure/outgas paint. They're not identical processes. For instance, paint finishes on model car bodies tend to be realitively thick applications . If the outermost surface is exposed to hot air, it may dry/cure faster than the layers below it. If this surface becomes imperiable, the less dry paint below it could then dry much slower, or not at all. This is the kind of thing that could lead to the finish cracking months later. Granted, this horror story is specuation on my part with regards to food dehydrators. I've never used a dehydrator to cure paint. But, this is the kind of thing that differential curing of deep paint can cause. Having not fully cured paint below an impermiable layer (especially when dealing with hotter paints, like laquers) is a nasty scenerio.
Obviously, some people have has good luck with it. As I said, I've never done it. This is a reason I'd be less inclined to try, but the real reason I haven't is that I've never needed to. I can always seem to easily set aside a body to cure for a week, while I work on the interior or engine- or another model. As klutz_100 pointed out, I've learned to fear haste in building....
Sorry to hear the S2000 is still giving you trouble. Looking forward to seeing it done!