TM gears won't fit in CA box, at least not the V2 I had before.
More specifically, all the gears fit fine except for the sector gear, which strikes the post that the switch spring is attached to
see, steel; I've handled 4 of these sets so far, found no lemony bits. Plus the $8 shipping makes it quite economical.
But they do cost 1/4 prometheus gears, so maybe just buy those.