Hi Herbert,
I built it up with JB Weld and it will probably hold just fine, but I found the parts, and a great manual, at Chiappa Firearms. Dixie had a cam for an original Spencer, Taylor's was a bust, never got through to S&S. The spring is one of those just in case things, if I shoot live eventually and need a heavier spring. Ordered two cams from Chiappa, they were only $7.00 each and Taylor's wanted $20. I am amazed at how well the cartridges run now.
Thanks everyone for the help, it is much appreciated.