In the '18 and '19 SS tips, the CCD sits concave in the bottom. The cone of the CCD is being blocked on the outer edges by Ledge of VapCap. By making the CCD convex, pointing at you, it opens up those extra breather holes along the edges. This is accomplished by pushing out the CCD and maintaining its cone shape as it came out. Now orient the CCD in the tip in this convex orientation and use a 5/16" tube [or similar] to push the CCD in all the way. Do not collapse that crown in the center. When you're done, it will look something like this;
IH... The IH heats lengthwise based on the coil. A coil should limit the heat imparted to the cooling fins [D'uh!]. But you do want to heat the hole cap eventually. That is what a torch does. If you heat just 'Digger', you are heating a lot because it takes so long for the heat to stabilize to make the clicker click. IH required a lot of tuning by the makers to make it universal to some extent, or at least give it attitude. I can honestly say, attitude or not, they all heat and they all provide excellent service. And
@mr_cfromcali will definitely take care of you.
This is one of my more interesting coils. It is in fact about 1-turn short of being long enough...
@Stu would rather us discuss these
elsewhere though
I made the '20 stem part of a Lego VC along with the Ti tip at 1/2 bowl and a very hot '19 cap that has reliable click-pairs, and a XL condenser. This thing is the real one hit monster when I toast it to the click in a hot IH. No need to find the air port. Poor man's Omni for some
...a Beast to me! The best taster in my collection. And I don't have functioning receptors anymore.
Welcome to your new reality
@proz9c - This thing might just 'click' for you; pun intended to the highest degree of course
edit;
@Bad Dog 's post reminded me to add that I also have a situation where more complex setups are not even conceivable so I obviously overlook them. My discussions are very much portable-centrist. Thx @-Dog!