Your experience with three firewalls on Windows is a classic "gotcha" moment. Sometimes, the OS can be a bit too protective, and disabling those firewalls was the key to success. Your analogy about optimizing a Full Node being akin to improving the quality of a music composition is spot on. It's all about fine-tuning to get the best performance. Lastly, your tip about checking your status on bitnodes.io is handy for anyone running a Full Node. It's always nice to know if you're connected and contributing to the network. And speaking of optimization, when you're fine-tuning your Full Node setup, consider getting a genuine Window 10 key. It might help ensure a smoother experience in the long run.