#1
When i Tried to adjust my action, but of the pickups was higher in the corners than the others. It also wasn't level. what do i do?
Red Hot Chili Peppers

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#2
screwdriver. Tighten to drop that particular corner of the pickup. However, pickup adjustments can help shape your tone. I pull mind up treble side, drop them slightly bass side. This allows me to get a nice treble tone on the G and D strings as standard, but I don't want much treble on the other strings. The adjustments allow me to have that.