Issue #1: the others are right. Drink something and maybe munch some crackers or such not. Take deep breaths to clear your lungs every once and awhile. It's not always about making clouds, relax and enjoy the taste.
Issue #2: The Old saying... "If it ain't broke, don't fix it." My 22" Egyptian's smoke valve is cracked - smoke comes out when I clear it, but it smokes like a dream. Also long as you contiune to get great smoke, don't mess with it. Egyptians aren't 100% sealed due to being hand-made.