6878 sticky to 229 lately on s shift and mia bus is always
8669U. Shall KIV, cheers!
Yeaps, i saw 6878X as well too. 
But yeah, I was thinking a 3-way swap between the SP+Sv 38+Sv 229
fleet (if you get what I mean since 6878X is SP), but I've yet to
find any Sv 38 bus that's consistently MIA yet (that would hint
it's out to SP). Which was why I think should KIV awhile more