TCraft, The embedded magnet system is interesting. Given what you just told me about it, I might suggest a hybrid system using both the 4 magnets and just 2 screws, one top and one on the bottom of each window. I don't know why Sig would feel the magnets are adequate for electric power but not for gas/glo. You're gonna love the Rascal 110, it's a great flyer. Mine doesn't have flaps and I wish it did, it lands "long" without them. The plane just doesn't want to stop flying. I power it with a Saito 120, what are you using?