I took apart a bottom bracket and upon inspection decided the adjustable cup and the spindle were a little worn. I took it to a shop and asked the mechanic if it warranted a replacement to a cartridge. He agreed with my diagnosis of the wear but told me a replacement wasn't needed yet. I purchased new bearings, greased it up, and put it back together. I finished the job with no play in the bb. After a couple days of riding I checked to make sure things were good and noticed a very small amount of play, but only when the cranks were in certain positions, and even then it would only happen sometimes. The lock ring is tight and the cranks are fully attached to the spindle. Could the light pitting on the cup and spindle cause the sensation of looseness?

When I originally found it to be loose, it was really loose. I am not sure how long it had been ridden like that. Could that have caused an uneven wear that would lead to this? Any help is appreciated.