I recently bought a ladies and youth model 73' and it had the replaceable cam on the lever. Give Taylor's & Company a call, they probably have what you want.
Slickmagicguns.com carbon fiber bullet alignment kit. It fits 18" rifle or can be cut for shorter barrel gun. The tube is 17" long. Comes with uncut stainless steel spring and stainless follower. $40.00.
Pictures by email .