I have been searching for a source for springs to replace the suspension springs on the Connie and K - 27.
Called Kadee and was advised to check a table on their web site. Which I did and found a spring which will work.
Ordered a couple of packages of 12. Cost is about $3.75 plus shipping. They are not perfect, there are too many coils, but the diameter and length is good and they fit in the hole and engage the little pip on the pillow block, and there is enough play/movement to be functional.
Kadee phone is 541-826-3883
Nice people, they have been supplying me for over 20 years, mostly springs for my own electrical pickups.
Barry