Should be another good one.
As far as I know, the cowling latches were 'downwards' on all 190's, as the side cowl panels hinged downwards, and the latches can be seen hanging down from the cowling panel in most photos of open cowls. But of course, I could be wrong, so worth checking.
EDIT :- disregard the above re the cowl latches. I've just checked the pics I took of Cosford's A-8, and the latches are on the upper cowl. Pics of other FWs show them on the top, and on the side cowl, so perhaps variant related, or perhaps a detail from different production sources ?