Inconsistent front rail pin size.

[Andrew and Rebeca Anderson]

I'm looking at rebushing keys on a piano and I'm up against pin 
sizing inconsistencies.  The center rail pin size was consistent on 
the few samples I checked.  The front rail pin size varied 5 
thousandths when checking just six pins.  Is this type of 
inconsistency typical for front rail pins or would I be saving myself 
a lot of grief by replacing all of them?

Andrew Anderson