Is it necessary to widen the nut when changing from 0.9 to 0.10?

Is it necessary to widen the nut when changing from 0.9 to 0.10?

Hi,
I recently purchased a Luke III and asked the shop to change the gauge form 0.9 to 0.10. They did add a spring and did some work on the bridge but I wanted to ask if it’s necessary to do something with the nut? I read on the FAQ that you should widen it but it seems to work fine right now.

Thanks!

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