Goodwood

Most cars leak from the window cheaters. Putting some extra tubing in both the seals on the door side as well and windscreen sides helps but often still leaks some. As mentioned, no new 'main' seal is available (and I doubt it ever will be). Even if you could get a new main seal, the cheater itself is probably a bit stretched and will catch water (and changing that part is no joke). It was not a good design.

Do you see drops of water on your inner door liner and speaker? If yes, then you have cheater issues. This is also made worse (in my experience) if your car is parked on a slope (facing downhill). It does not seem like much but the small ingress quickly adds up.

The easiest solution (after you have attempted the above) is to put a half cover on car if it sitting outside for longer periods. For shorter periods, I have a couple of small (rectangular shaped) sponges that I place below the cheater on the inside to catch the drops (they rest on the 'ledge') so it does not drip down to the speaker and carpet.

Not so sure about the snorkel. This was a problem on earlier cars but not later ones.

Before pulling everything apart, why not put some paper on your floor the next time it is parked in the rain so you can see where the water is coming in from.

Posting a few photos (of window gaps, water droplets after rain, convertible top condition, etc.) may also be helpful.

You can probably pull back the carpet enough to dry it without having to remove the center console although the seats would need to be removed.