Since you (Execpro, specifically ) asked for an update, here it is...

After almost 6 weeks of anticipation, I finally got some info back from S&W. Here is what they want to do to fix my revolver:

1 - Realign the forcing cone
2 - Turn the barrel
3 - Correct hammer push-off
4 - Replace after-market hammer spring

The real issue with the frame burning/staining is coming from the misaligned cone - and a side effect of that problem is probably why they want to turn the barrel (maybe some interior gouging/scraping?). The hammer push off was really a safety issue more than anything else, and I don't care that much about the hammer spring. After about $200 and 4 more weeks, she should be home.

Thanks again to everybody for your advice. I am looking forward to finally getting to take it out to the range.