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Originally Posted by B58-M340iX

Use a thin microfiber-sleeved brush, like this one: https://www.amazon.com/dp/B0BHXCF44B/

I've been using a similar one: https://www.amazon.com/dp/B0C49X1C1W...roduct_details

For my Z4, but it is indeed thin and might be a candidate here. Comes with a few extra "sleeves" as well.