Thanks for the ideas. FYI - St Boni gunsmith no longer...
I've seen a video on dissassy. this gun - "man's got to know his limitations!" A gunsmith can recommend replacing worn parts et al in addition to cleaning. I did have rust on the gun last summer; not sure how it happened but it took a lot of labor to remove. And that's what I could see and get at, without tearing down the gun.
I'm sure there's rust inside the gun as well as built-up grease et al. so I'll pay the $65 to have it cleaned by a pro. Last time I tried to take this gun apart the springs and parts came flying out!!
Today I managed to fit the new rear stock and install the special pad on the butt.