Had the same on my 04, hell to get away in the morning...renewed the oiljet but that didn't solve the issue. In the end I just bought a young but used 990 clutch (complete thing) from *bay for about 130$ and exchanged the whole thing, smooth as silk now even when freezing outside...
My old booster had quite some play after 30K miles....
From Superduke to 950 Adventure... YES!!!!