-6.5 is only slightly out of spec. Pads are essentially a maintenance item which will bring you closer to zero but don't expect any noticeable changes. Inspect your old pads when they are removed. Big ruts and/or chips? I went from 9 and 6 to about 3 when I changed my pads, but I only did the top ones.
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James now has: 2008 987S 6 speed
Crashed: 2010 987.2 pdk in speed yellow!
Sold to a cool racer chick: 2004 986 S
YouTube channel: the PORSCHE as seen by NewArt
www.youtube.com/channel/UCohdrH2xHTklM1thxk0KKOQ?