Leaking nitro Evader... immagine that, I think everyone who has a Evader has some leaking problems at one time or another. Tighten the screw under the gas tank flip up cap, that should help. If not maybe a broken tank?
Trans??? could be alot of things, maybe someone could shoot a link to a self help site for that, don't be scared to take it apart, not much to it actually, you should see an obvious problem if it just won't move., you can replace the whole thing for $20 in parts

joe