J, you are doing well too, I really liked the old Massey tractor.
OAF, not only your vehicles look fantastic, but your diorama as well!
Not an expert, but also a weathering fan, but IMHO the only thing about weathering wheeled vehicles is looks like people don't pay much attention to tires. Those should show excessive wear, cuts, sometimes unmatched tire brands, even opposite tread patterns.
I am into this project right now, hence why I don't post much on here nowadays (but I shall return to 1:50 next year...):
CN2151Started from a bare brass C40-8W, then converting to DCC+sound/LED, paint job, all bells and whistles, then weathering of course.
S
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Playing with toys since 1970, now building them.