Replaced rear brake line with:
https://www.amazon.com/gp/product/B0...e?ie=UTF8&th=1
Fantastic results. Brake is very firm and immediately responsive. However, the brake switch has already failed! So today I’m installing:
https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
Will report results and some pics after I’m finished.