We bought a 200 yr.old log home, we are wanting to restore it. One corner of the home has settled tremendously due to water leaking from stone chimney, and probably termites. How invasive is it to tear out that corner and reconstruct? Also, how do you suggest we re-finish the interior logs. The chinking is a combination of actual limestone chunks and what looks to be like a mud-based chinking. Any tips on how and in what order we should proceed? The logs are pine.