STL/STEP file - revision mismatch

[Bobblybook]

Hi,
I've recently tried printing a rev C base and top (BTU modded).
I've just noticed after printing that the "rev C" version actually has "A" embossed on the base.
I've double checked what I printed:

The Rev. C STEP file has "A" on the base
The Rev C STL appears to have the correct "C"

It seems like only the STEP has the incorrect design - I'm not sure if it's only the lettering, or the whole model is old and not really rev C.
I also haven't checked any of the other versioning, I have only run into this one so far. Are the STL files more accurate? I don't want to need to reprint a lot of material.
Thanks

EDIT: Looks like the tops are the same.. The "C" BTU modded top I printed from the STEP file has no letter marking, the STL equivalent has a "C".. :(

[gbrnt]

If I remember right only revision D of the trackball changed the base. Until then rev A of the base was used. So Rev A base should work for rev A-C tops (unless I've forgotten how it works).

Not sure what the deal is with the tops, and I don't have the free time at the moment to properly investigate, unfortunately.