Hermle 451 fly and stop wheels

[disciple_dan]

Hey, y'all.
I'm working on a Hermle 451 this week. I can never seem to remember which fly and wheel go on which train. They are nearly identical except for tooth count. One is fine and the other less. I'm thinking that the fine tooth one always go's on the strike side. Is there as easy easy to remember? And why? Thanks guys and have a merry Christmas.

[willofiam]

[clockmanbill]

I like to put a small make on one, either one, that helps me get them in the right place. I sometimes use two different containers to hold the trains in , keeps them apart. And if needed I'll wire the train gears together when I put them in the cleaner and from that point on keep the trains apart. Just my two cents