Fork spring cup in 2009 txc 450 forks, 50mm marzocchis. Technical question

I took apart my 50mm forks on my 2009 450 txc and had a technical question that I could not find in the manual or online.

The spring cup(#13) is basically a washer with a seat or groove on one side. The manual doesn't say which way to put it on. I am second owner of the bike and the previous owner had serviced the forks. And when I took the forks apart, one spring cup was facing up on one fork and the other one was down on the other fork so I dont know the proper facing of the part.

Just need to know if the indent is up or down. Thanks in advance,

mark

EDIT: See comments from other members below. Apparently I was thinking of a different washer than the question was asked about.

I appreciate the response. I put them back together. I scoured the internet for information and nothing. The washer fits between the fork seal and the upper bushing. I don't think it will harm anything either way put in but there should be a right way. Ill try to call marzocchi and see what they say. couldn't find an email for them either.

I'm pretty sure Zipty can answer your question.

The stepped side goes towards the seal and is supposed to help keep the seal centered. The seal can float and leak if it is installed the other way.

Later,

Thats how I put it in. the flat side toward the bottom guide bushing and the cupped side toward the fork seal.

I appreciate the response. I changed the oil to 5wt at 280cc and did the refill/air purge on the closed chamber. Hopefully will be better. thanks,d

mark