About 6 months ago I removed the intake manifold (as well as other stuff). I vaguely remember some small washers that where on the fuel rail but I can't remember what they looked like or where they went.

I was careful to take pictures of everything as I removed it and I placed everything in labeled bags. However the sharpy I used has managed to wear off the bags and the labels are now unrecognizable. Next time I'll use actual printed labels.