Hingepins impossibly tight in Centro brass bulkhead

[jason-l]

Hello all. Apologies for what is, I'm sure, and elementary question.

Just started building my Centro kit, and am fitting CML's Centro brass bulkhead. Problem is the hingepin holes through it are impossibly tight and if I pressed the pin in (probably not even possible as is) they'd be stuck there forever.

Is this normal for metal-metal bulkhead-pin interfaces (I only have experience of composite/plastic bulkheads)? Should I carefully increase the brass holes' diameter or sand-down the pins?

Thanks
Jason