Yep I followed that procedure when I put in my transmission cooler a few years ago...I wish it was less of a pain to check and fill. I'm about 3k from doing another drain and fill too. The tick is newer or at least much more pronounced than it was in the past. It's not the normal clicking sound. I'll probably stick my long screwdriver down there this week and put it up to my ear to see what I can hear.