Dunno about a "troubled" RS.
Both Jet and Myself have had radiator tanks go (mine actually cracked at 3 points - top tank, bottom tank and one of the tubes = R.I.P.) and both of us (and Danwatt) have had our turbo's go - all have been highflowed.
Issues I have had are;
Right front wheel bearing assembly replaced at ~94,000kms
Turbo let go, thus was highflowed ~120,000kms
Radiator turned emo - replaced with custom unit ~145,000kms
That is all.