tompoland Both are doing that. I’m using a Tetsu Switch recipe which suggests adjusting the grind until the water is all but drained at the 3 min mark.
OK, but previously you were getting 210g in the cup, it looks like you got 199 & 200g in the cups on the last brew - the coffee cannot be holding back 80g of liquid.
Always look at total brew time as an average value with say +/-20s tolerance (the more liquid in the brewer when you draw down/stop pouring the bigger the variation). I saw that Tetsu lifted the brewer, before the last liquid drained, in his video, I think he did this because his grind size guess (20 Comandante) turned out finer than he was expecting. But, the big extraction driver is based on what you get in the cup - say the last immersed pulse exits the brewer at 1.3%TDS (just a guess), you are 0.4g short of coffee in the cup, that could be a variation of 2%EY from one pair of brews to the next. This much difference is totally wild in terms of brew consistency (+/-0.4%EY over 10 brews of the same coffee would be more typical), and will result in significantly different cups from the same beans.
Yes, the Kruve will help you sense check the grind size. +/-1% in mass passing through the 400/500 sieve can be considered the same. But balance this with whether you feel there is a noticeable, generic malfunction that persists in the cups from one of the grinders & see if you can correct that prior to further comparisons.