Has anyone retrofitted the Air Magic F-15 wheels & brakes to the Robart Avonds F-15 struts ?

Just purchased a set of the Air Magic wheels and the bushings are drilled for .250 axles. The axle in my my Robart strut is .188 and also is not long enough to fit a retaining collar.
Also the lower strut of the Robart gear is a very sloppy fit in the hub notch. The hub will rock considerably before hitting against the stop.

Does Robart have a strut to adapt these wheels to their gear? It would require a .250 axle and slightly longer to boot.