Is this bilstein shock ok, it has some fluid on the piston?

[clydesdale]

I bought new bilstein HDs for my 325is. When i took it out of the box, one of th front shocks had some fluid on the shaft. It was a fairly good amount. I decided to go for the install anyway. Any thougths on this? I saw on eshocks.com, they said not to be alarmed if their is some oil film on the shaft. I think this might have been a little more than a little. It stained the blue boot, red in one spot. The other side had less on it. What do you think? How can i tell if all is ok? Thanks. It was a bitch job and I would hate to do it again, but it would be much easier this time. Thanks