1/24 Hero X Wing Build with Maxi Brute Fuselage

[PB BB1]

BUT are those holes in that part a result of a casting imperfection, and is it really ribbed? I see a boxish shape at the one end, and a lot of glue and imperfections on the flatter portion. 'Flat' or perhaps the ribbed section (which may or may not be ribbed at all) is actually a half cylinder. If this case then yes, could be some sort of axle... or landing gear segment. Checked my 1/24 airplanes for ammo boxes or any part with an ammo channel (thinking ribs) and nothing matches. Other alternatives. Box bogey detail from anything combined with 1/72 section of tank tread. Probably 1/72 or OO scale. No idea, there isn't much left with a decent 'tell.'

So yeah, kind of hit a wall on these parts IDs. Been snatching up kits that meet two criteria; confirmed donor kits used on other ANH-era builds, and anything I can see in background production photos not yet documented here with a kit scan. Just added 1/48 Bandai Aero Subaru scans here... because I could barely spot it in a stack of boxes.