I had deleted local data for simpleplanes a short while back on my iPad, because I had just too many planes saved that I had built, of course that meant I lost my subassemblies, most of them I didn't really use, but crucially I used the XML structural wings which had control surfaces enabled, as obviously on iPad we can't XML mod simpleplanes. I recently redownloaded one of those wings, as I needed to use it on a stealth bomber I'd built as it had very bendy wings made of several wing parts, I however can't find the subassembly button anywhere? I can't even find in the setup controls a place to setup a control for it? Seriously where has it gone!