True that
@GRZ - adding disks will shorten the time -and- reduce the bake. You would want to start with the hottest setting and add disks to tame the bake.
When I tune, I tune to frustrate combustion; I gauge my second heating in a session as the money hit - Get the terps, moisture, and some lightweight goodies out of the way on the first heating and really cook the second. This means heat - draw - force-cool to click - and heat again to the click - and draw for all the money, here George would exclaim "w/ air port wide open!" . I don't do air ports personally.
You will find that this kind of tune also translates well to other caps, hot or not. A hotter cap will click faster than the newer caps. Yet they all provide a very similar experience using the technique above. The easy way to look at it is 'how many watts did you cap absorb?'
There is
@phattpiggie 's Sip&Dip method that really lets you get comfortable with your bowl. I find myself doing the 3rd draw to completion. I like the technique above... I do want to feel the first draw and see cloudiness at the click but the second should be what you want in every draw and not combust any of your caps. Adding the S&D to finish off the bowl really does give you some excellent control over getting to that popcorn state. 3-count; draw; 3-count; draw.. rinse/repeat until she's spent.
So before you change the coil, see if your Flix is set hot enough - forget the seconds - cakes take 25 minutes and babies take 9 months, ...caps vary, not the IH imparting watts to the VC. Do as above and is the second draw wimpy? Raise the coil away from the board until you get that perfect second draw. However, if you use the technique above and you combust the second draw, you will be lowering the coil until that shit stops happening. This you can simulate with spacers up front before you make an adjustment.
I hope all that is clear. Let me know where I put fog in the vision.