bmax4 II WE shocks leaking oil

[topher2009]

afternoon, searched the forums but couldnt see anything similar so presume I am making some kind of mistake!

I have a BMAX4 II World edition (with the big bore shocks) and have built them as per the manual 3 times now but every time after a few runs, they are leaking oil, it appears from the "O" rings on the top cap.

Any advice other than follow the kit manual again? I was thinking of soaking the O rings in duck oil to see if they would swell slightly and see if this helps?

Thanks

Chris