Skeettx,
Thanks for the warm welcome! I hate feeling like I hi-jacked this thread, so I'll be brief. I've been away from the forum for a couple of days or I'd have replied sooner. I've been monitoring this forum for about a year and enjoy learning form the experienced folks here. Treasure trove of info. I'm right active on the LCSCA forum, and moderately so on the Parker site. I'm ate up with Elsies, so my eyes are always drawn to any post that mentions them!
As RWTF assumed, the gun I referred to is an O grade, and apologies to David W. for botching the abbreviation of its parameters.
While I perform all manners of repairs on LC Smith shotguns, for myself and lots of friends, I've not encountered the issue that the OP faces at present, and I look forward to hearing the resolution.
Thanks again,
John