Rear calliper retaining pins - different lengths - which goes where?

[Paul Atherton]

I ordered new callipers and carriers/pins which all came disassembled. I see the pins are different lengths, Anyone any idea which goes on top?

 

[NHN]

Can't you check your current ones.

 

[Paul Atherton]

I already took the current ones apart - hence the reason I am asking. Also, who's to say that they weren't wrongly installed in the first place?
Is there anyone who actually knows the answer?