no plates are installed. the outer basket is installed on the transmission shaft. the outer basket turns about 1/8" while the large gear on the back side of the basket is held fixed.

or you can remove the clutch basket and whilst in your hand turn the gear on the back side back and forth, again about 1/8" at the outer radius.

there are some type of rivets that attach the steel gear to the aluminum basket. they do not appear to be removable. it's my guess that this should be a rigid assembly and that wear/use/abuse has loosened this connection. the basket has a good bit of wear. looking to find out if it needs replacement or if this slack is normal. thanks.
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MC21R9N track
MC18R2J track
CBR954
CR250