using free bbs without cages is fine with me--- the cups have a size the spindle has a size---
it sounds as though the cup is cross threaded or its the wrong cup--- can you re-position what you had after re taping the frame threads-- not all sealed units come marked correctly-- I have put one in backwards once because I took for granted the drive side "it looked right"--- if the frame is not cracked--- re tap the frame and start over keeping score of numbers---