I posted this earlier, but since that post, my 5K Chosera has gone from crack like lines to actual cracks. This leaves a gap in my portfolio. Right now it looks like this: Chosera 1K, 3K, (lost 5K), SS 8K, SS 12K and my finisher. Is it advisable to jump from 3K to 8K? I just found out today that the 5K 'lines' had migrated to the top of the hone and could be felt with your fingernail.