free play in shocks?

I have a 99 YZ 400, i had my forks serviced recently and have set the compresion and rebound to the stock settings. But now when i push them down they dont fully return, and have about 3-4 less inches travel. I can pull them up but as soon as i push them down they only return 3/4 of the way. What can i do to fix this. My rear shock also sags, but feels like it still has good rebound, should it have free play or somthing like that? thanks for anyones input.

the front shocks dont really "sag" its more like they are getting stuck. When my bike has been on its stand the shocks sit where they should, when i push them down they only return about 3/4 of the way back. Its like the rebound in the shocks isnt working. I was thinking mabe the springs have had it... sounds costly.