Thanks Teyber!
When you say "take of that insulation to show just the evap" you mean cut it off with scissors to show this: http://i44.tinypic.com/mhyo42.jpg
So the sandwich will be made on the base of the evap leaving most of the head exposed? On pic one you can see that the evap is not a tight fit on the plastic head so how should I insulate the tip there?