Scott Nude shock gritty sound fix HELPP!!!

jon1993
jon1993 Posts: 596
edited January 2014 in MTB workshop & tech
I have a scott scale 30 with dt swiss scott nude rear shock which started to sound very gritty when compressed.
I let the air out unscrewed the main chamber to expose the damper rods and foam rings gave everything a clean yet it still sounds gritty even though the outer casing is removed and internals are immaculately clean. Does anyone know how to fix this? Thanks.
Scott Spark 30 carbon custom build
Giant Faith 2 DH bike
Boardman pro 2011
Boardman team carbon 2010
Carrera kracken 2009
Specialized fsr pro 2009
Haro custom build
Cannondale custom build