1. This is normal, many of my S9s only show temps in field two. These hash boards will run over 100c so dont worry about your temps.

2. Autotune firmware does not give you the opportunity to change miner settings anymore.

3. You bought an industrial miner, thats why its loud. If you put that fan on your miner wont run. Its 2100 rpm and 70cfm too weak. Dont change the fan.

4. No, not really. Why would you constantly be turning it off anyway? The whole point is to keep it as near 100% uptime as possible to maximize profits.