well marley it can be hard to generalise but your sats should stop stretching in a week or two at the outside. remember that when the screens are full you can take up some stretch as they grow upwards and a few inches of growth above the screen can be great for yield.
when thay have stopped stretching, if the growth is very congested then dont be scare to cut a few of the weaker stems/sideshoots off completely if they are trying to grow in the same space.
cheers
VG
Thanks VG I appreciate the response. I love the flexibility of the mod. scrog, I suppose I just need to start taking advantage of it. Being able to adjust each individual pot's height is a great tool especially when growing different strains. This is why I loved your mod. scrogs to begin with!
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Marley