Hunting loader control valve case 580C or parts

Need 1978 Case 580 C loader control valve, or some parts. It's a Parker model.
Two spool.
Previous owner lost the centering spring retainer seats on the lift spool.
Also lost the detent spring.
Would be interested in whole valve unit or parts.
Rough is ok, as long as I can get the pieces I need.

Thanks,

Steve

Hunting loader control valve case 580C or parts