I bought some pre-modded TPB carts for my M401.
I took out the filling, dropped 10 drops of juice, put the filling, made it flush with he inner cart's height, and topped off with 3 more drops.
I put that in the mouthpiece, and puff away.
The only thing different between this and the standard polyfill is that it can now hold 13 drops of liquid, a bit more then polyfill.
BUT, I have to re-fill at the same frequency (TPB or Polyfill, same thing)
From those 13 drops, after a while vapour starts to get weaker.
So I take out the mini cart, and put some drops in there. 4 drops and it's full and flush.
Puff some more, and after a while again I have to put in 4 more drops.
etc, etc, always 4 drops.
Now I don't see the point of TPB vs Polyfill if I have to refill as constantly as before.
Here's a picture of how my inner cart looks like right after I take it apart before dropping 4 drops.
The filling was pushed down by the atomizer I assume as it's not flush with the edges anymore. And it looks like there is has sufficient surface area between the filling and the atomizer.
Is the behavior I'm experiencing normal, or there might be something wrong here?
I took out the filling, dropped 10 drops of juice, put the filling, made it flush with he inner cart's height, and topped off with 3 more drops.
I put that in the mouthpiece, and puff away.
The only thing different between this and the standard polyfill is that it can now hold 13 drops of liquid, a bit more then polyfill.
BUT, I have to re-fill at the same frequency (TPB or Polyfill, same thing)
From those 13 drops, after a while vapour starts to get weaker.
So I take out the mini cart, and put some drops in there. 4 drops and it's full and flush.
Puff some more, and after a while again I have to put in 4 more drops.
etc, etc, always 4 drops.
Now I don't see the point of TPB vs Polyfill if I have to refill as constantly as before.
Here's a picture of how my inner cart looks like right after I take it apart before dropping 4 drops.

The filling was pushed down by the atomizer I assume as it's not flush with the edges anymore. And it looks like there is has sufficient surface area between the filling and the atomizer.
Is the behavior I'm experiencing normal, or there might be something wrong here?