Ve pump delivery valve return spring.

Would anyone happen to know of a place online that i could order dv return springs? Had 3 go bad out of the blue. Truck started running bad and missing so i parked it thinking my pump was bad. Later messed with the pump and removed the delivery valves and 3 springs had no spring to them. Never heard of this happening but i took 3 out of a another truck and it ran like a champ. But need to get some to put back in the other truck. Please let me know if you have seen or know of a place. Thanks!