ORIGINAL: vrocks
[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.
How will that stop the plane nosing in? he is describing a nose in not a ground nose over, I think maybe he is not flairing the plane before touch down or he could be flairing too much and getting a stall just before landing.