This will be my first post here. I know many U-Controllers here use the Stunt Hanger site, I just have never signed up to it. I have used for years the Stuka Site, but it seams to have closed or something. I can't get into it anymore. I wanted to read up on the Fox .15 X and the differences with the XX and the XXX engines that were discussed in depth there. I'm just asking where to search for this information. Thank you all in advance for any help. Eddy H