![For some reason there is oily substance build up on my controller thumbstick. Happens after several hours of not being used. Any idea what causes this? Been happening for a few days For some reason there is oily substance build up on my controller thumbstick. Happens after several hours of not being used. Any idea what causes this? Been happening for a few days](https://i.redd.it/0az4h33o4af71.jpg)
For some reason there is oily substance build up on my controller thumbstick. Happens after several hours of not being used. Any idea what causes this? Been happening for a few days
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