I think those you are talking about are peaces of old bile. I congested liver bile goes to gele like form, looses green color.
The next step is rock solid liver, and no flush can get one out of there. I remember passing clear brownish gel bits with my first few flushes. Also, old bile might look like dirty mineral oil. You might need a few more flushes to clear things up. Keep going now, make your liver working.