@tara81, if you are thinking it may be an issue of ingredient percentages, you might want to experiment by using flavor bases. A flavor base is simply a recipe that has not had the PG. VG, or nic added to it. The benefit of using a flavor base is, that it keeps the relationship of each ingredient, to all the other ingredients, the same. And, as in this recipe's case; I am not having to repeatedly handle 10 different ingredients, over and over and over and... well, you get it.
If you mix up a flavor base; you can quickly and easily try mixing it at various percentages, to see if going higher (or even lower), will improve your flavor perception. Here is an example of Lemon Tart Remix you mentioned trying (I already had in my calculator

):
This is the original recipe as posted on ATF:
View attachment 740779
(Click on image to view full size; click again to return to smaller image)
(NOTE: For the Lemon Meringue Pie, I have subbed CAP V1, for the FW the author called for... at the same percentage. I will not use the FW version because of the sugar syrup. You can use which ever you prefer.)
Notice that the total flavoring percentage (as the author wrote it) is 14.55%. The remaining 85.45% is made up with PG, VG, and nicotine (when used).
Since all I want, are the flavor concentrates (without any PG, VG, or nic), I need to convert that 14.55% to 100%. I do that, by dividing the (original) individual ingredient percentage, by the (original) total flavoring percentage. Here's the first flavor concentrate, as an example:
-- The original recipe calls for Bavarian Cream to be used at 1%.
-- I need to figure out how much 1% is of the total 14.55%.
-- So, I divide 1 by 14.55. (1 ÷ 14.55 or 1/14.55)
-- The answer is 0.068728522 (1 ÷ 14.55 = 0.68728522)
-- Because I am working with percentages, I move the decimal point two places to the right, and I end up with 6.87% (rounded off to 2 decimal places).
The Bavarian Cream is 6.87% of the total amount of the flavor concentrates used.
When I do the same math, to the rest of the ingredients, I get these results:
View attachment 740783
(NOTE: this recipe (as shown) will make 10mL of flavor base; which would make about 68mL of the original strength recipe)
This is now my flavor base. I can make up as much or as little as I like, and not worry about getting the integrity of the original recipe out of balance.
If I want to make the recipe as the author intended; I would add 14.55% of the flavor base (to my preferred PG, VG, and nic).
If I want to make it stronger than the author's version; I would add
more than 14.55% of the flavor base.
If I want to make it weaker than the author's version; I would add
less than 14.55% of the flavor base.
Using a flavor base, one can make multiple small testing samples, at various strengths (percentages) to see what percentage works best for you and your device.
Alternate method to make a flavor base:
The e-liquid calculator I use, has a flavor base creation feature, so it is simple. If your calculator does not offer this feature, and you don't want the hassle of doing the math; there is another quick means to make a flavor base. And, that is increasing the original recipe by a specific amount, and omitting the PG, VG, and nic when you make it.
It only requires doing one math calculation. Decide how much flavor base you want to make. Then divide that amount (mL), by the total percentage used. The result is the "volume" you would set the recipe to make.
For an example; I will use the same lemon tart recipe's values, and aim for making 10mL of flavor base:
-- The recipe calls for 14.55% total flavoring.
-- I want 10mL of flavor base.
-- I know my formula is: "desired volume" divided by " total flavoring percentage"
-- Plug in the numbers: 10 (volume) ÷ 0.1455 (percentage) = 68.7285223mL
Then, all I need to do is:
Set the "amount to make" as 68.7mL, and then combine only the flavor concentrates, and I will end up with (just shy of; because I rounded down) 10mL of flavor base.