If you need new valve springs for a Continental 14L, you can have them custom made at OmniCoil, 307 Darrell Drive, Ayr, Ontario N0B 1E0 (email@example.com).
I've got 12 new high quality springs for just over $200.00 You can send them a good one (if you have one) to match. Otherwise, you can refer to my order number 512123 and you'll get exactly what I got.
Hope this can help.
Where Are You From? Iroquois Ontario
Do You own a car built by Durant? Yes, a 1928 D-60 sedan