A creative alternative to shimming a nut with this small piece of wood.  I see a lot of business card scraps but this is the first mini nut to come across the bench.  Unfortunately in this position the "fix" wreaks havoc on intonation as it shortens the scale length on the G string.  Ideally I like to replace the nut but removing the additional piece of wood and filling / recutting the nut slot was a more economical solution for the customer.

This customer is a bit of a tinkerer so he swapped out the pickups.  In the neck is a Sentell P-90 and a TV Jones Soapbar P-90 Power'Tron in the bridge.