I
IanG
Some people put yamaha seals in and it solves the problem
I believe until recently OEM fitted Ohlins were made by Yam anyway,not true Ohlins Ohlins ( if you see what I mean)
I think I'm right in saying ( and I'm sure someone will correct me if I'm not) that Ken Ohlins has bought the company back from Yamaha and it is now an independent suspension company again.
Perhaps the quality control he was famed for will now return?
Ian