Marzocchi 4X travel issue

My mate has some marz 4X and there is a slight problem with them. The forks sag about 8mm with no force on them at all, its like the first 8mm of movement is free play. The forks have air in them. Has anybody else experienced this problem or knows the solution?
<hr noshade size="1">You bend it, you mend it.
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sound like they need some air adding.
Oh and 2007 or 2008?
Parktools :?:SheldonBrown
set the sag and that is it.
Parktools :?:SheldonBrown
Parktools :?:SheldonBrown