Hi – I’ve read through the docs & forum + additional outside research on typography settings, so I have a fundamental understanding in using px, em, rem, and %. I avoid additional padding and margin unless absolutely necessary as they contribute to a multitude of issues. What I’m a bit stumped on is I’ve reviewed the GP sites in the Site Library and have noted in both the Line Height and Letter spacing no values set and/or a unit of ” – “. In some cases, there is a value set, but the unit is ” – “. Yet, with these settings, the associated slider is positioned somewhere midway. A good example is the GP Site titled Explore. I realize from a previous post that you don’t recommend any presets; but my question is should each of these values be set and do you have recommendations relative to utilizing px over em/rem for height, spacing & margin? BTW, I’m truly loving GP Premium – fantastic product.