Here is the issue
A friend has a yz250 2002 .
he has replaced all these parts to OEM
clutch push rod [ i think its called that ]
and clutch springs
he rides and after 1/2 hr or so the clutch play goes away and tightens to the point of clutch slipping .
he has tried all types of oil with no luck
and all clutch parts are new OEM
i have no idea what it can be