RE: Maiden Flight with Super Cub (Hobbyzone)
[link=http://www.hobbypeople.net/gallery/568341.asp]Dubro Super Lite Wheels[/link] will fix the nose down problem.
I personally had to shave the spoke hub (center of wheel that protrudes 1/16th of an inch past the spokes) with an xacto knife in order to get the wheel nuts back on.
One of my nuts was shipped broke so I used some kind of collar that fit around the protruding landing gear wire and was held in place by an alan wrench screw.