Hi David,
you’re right, new wheels would be the best solution. But I’ll doubt SR will take that effort (and costs). That’s why I thought about revised rubber tracks. Honestly, scratch building the complete wheels is beyond my skills. And even doing some wider tracks from bendable styrene sheet will include a vast number of tiny bars on the track surface. Maybe I’ll try a cardboard dummy track to find out whether wider tracks would improve the overall look or not.

The broad wheeled appearance on your photo is exactly what I have in mind when thinking about that gun in action. I like the shape of the SR gun itself, but the narrow wheels kept me from assembling my two A001 kits yet. Hope an aftermarket manufacturer will take the wheel challenge without charging a sky high price (even elevated, it is no AA gun )