I have set of original "S" cams for sale, in pretty good shape for 60+ year old parts.
These are especially good for a Electra X.
To explain the advantages of these, far more eloquently than I ever could, have a chat with Adrian II , have a read of some the posts on here or contact the Global Moderator Adrian on the Midland Bullet Riders forum.
I'm on either forum.
Dodd.