have you tried to take off the bowl, hold your finger to the opening at the top and breathe in? if it bubbles or you are able to breathe in anything at all you have a leak somewhere. if you dont, try putting the bowl back on, put your palm on top of the bowl to close off air and try again, if it bubbles then that means you may not have a good seal between the bowl and the stem. Also I suggest breaking the 3k into halves and moving them to the outer edges of the bowl, rather than the center like you have in the pictures.