Mine was slightly worse and I could feel a hair line score on the fork leg inner when I ran my thumbnail across it.
Asked Darren at MCT about it and he didn't mention anything about grease?!
Took the fork out(RHS) and MCT put new seal in it and polished out scoring for ?100.
He said it would have only been ?60 if he didn't have to remove some BMW anti tamper thing!
Similar thing happened to a mate of mine - Lind Motorrad BMW charged him ?500- admittedly they did both sides and took the forks out but was in there for a service anyway - robbing bastards!