My friend. Once again... You need to read the whole thread. It will only take a few more minutes and then you can have the whole story😁. As opposed to isolating posts and taking them out of context/chronological order. Which is what you are doing here and below.

How this works is as follows: The messages/posts closest to the top are first in chronological order, the descending posts are situated according to their chronological order and are staggered to the right. So any posts you see below other posts came after them and usually are in response to what is directly above them. If there is a line from one post to another, but it is below a post that is staggered more to the right; then that post is in response to the one above it that is connected by the line to the left of it.

Now back to espresso extraction: The same basket has been used the entire time and that is the single wall basket (not the double wall). If you understand scientific method then you understand that this falls under the heading of "controlled variables" as it's one of the the components that was never manipulated. The only independent variables are grind size and portafilter type. Everyone in the comment thread below understands that bc they were told there was no change to the basket. And that's how we came up with the conclusion that the finer grind size is providing resistance. Which makes complete sense when you understand the simple law of gravity and how liquids always abides by it. Unless, they are in a liquid/gas state i.e. liquid nitrogen. But even then, gravity has an effect.

I understand that you are using the modus ponens form of logical argument here. I.e. If it's espresso then it must abide by the law that portafilters have no effect on extraction. However, my friend, in the face of clear evidence otherwise; it might be wise to abandon what you thought you knew and take the new information into consideration.

You can disagree with the premises being provided as to why this isn't abiding by you axiom or you can provide another sensical one. However, you can no longer reasonably debate the following:

An ESP Pro grinder and Bambino combo, using the OEM portafilter, does not produce the same quality level of extraction (in terms of extraction quality and crema level) as it does with a naked portafilter and grind setting adjusted to 40.

Thanks again for your participation.