The bottom end feels good... there is only sideways movement with the big ends,
I think here must have been moisture get in around the cam followers, there is a rusty colour moisture on them & the cam..
the cam lobes & face of the followers show no sign of wear at all..
I dont know if I would trust just cleaning it up... my luck the first time it ran the Ar$e will drop out of it..
then I'd be kicking myself for not checking everything..
I went into MODAK today & picked up a few parts on back order