Finally sucked it up and replaced our worn out water pressure regulator. Installed a shut off valve as well so I don't have to shut the water off at the meter every time.
The old copper with globs of solder is not mine. Whoever installed the water lines when this house was built should not been allowed near any tools, ever.
Case in point:
I still see globs of solder....
Perfect is the enemy of good. Then again, that's probably what the first guy told himself while he was bending/kinking pipes to get around other fixtures. ๐คทโโ๏ธ