It's probably not clear in the photos, but I did hit my first snag during the cleaning process.
Attachment 112635
How and why this was put in so deep is a mystery to me. I didn't want to get so aggressive with it that I damage the buttplate, but this screw is STUCK. I'll have to scratch my head for awhile and figure out how to get this out. All things considered, I don't really have a need to take it out (the cleaning is already done), so I may just leave it.