How to mechanic BB service continued.
Next you need to clean the cup/cups, spindle and bearings. Then inspect the bearing races for pitting. You can look up images for pitting. Normally I would take out the fixed cup because it is harder getting loose bearings back in when it is still in. This one didn't budge, so I left it in. Use whatever means you have to get it clean. Pipe cleaner, tooth brush, whatever.