Answers

Yes.

Sounds like it needs the foundation leveled and then set house back down on it to start sealing properly. I would recommend having it completely re-chinked inside and out. Call Mike at 866-670-3020 for help.

Only way I know of is to sand them down and start over. Leaving the art down for a few years may help it blend together.

No, it should not leak, and yes there is a much better brand of caulk for log homes. Energy Seal by Perma Chink is what you need to use. Call Dave at 800-564-2987 for help with obtaining it.

I suppose they could be if they are straight enough and the bugs haven’t gotten into them to much. Be sure to give them a good healthy coat of Shell Guard borate inside and out before staining.

Absolutely, Take out old windows, cut openings to your desire and build new bucks to install new windows to. You should leave at least one log across the top of a window with no splices.

No on the bleach. Try calling Dave at Timeless Wood Care Products to see if he can recommend something. 800-564-2987

You have it right, sand and seal. Call Dave at 800-564-2987 for help and materials.

You need to caulk the exterior with Energy Seal 100%.

unless the logs were sanded and sealed there is not much else you can do other than sand and seal them now.