Brewed my first extract session IPA a couple weeks ago (Conundrum kit from Northern Brewer). Sitting in the secondary now dry-hopping. So far I have a few simple questions I was hoping some experienced brewers could answer. 1. I have one of those sample thief that the tip depresses to steal a sample, but it seems to suck trub off the bottom with the sample. Does this affect the reading? I suspect so and was thinking of getting a classic one where you just place your thumb over the hole to seal the thief and pull it out. That way I could do it from any level and not grab any trub. 2. After the reading, do you put the sample back in the fermenter? I did put the sample back after the OG reading and once taking a FG reading, but felt pouring it back in was introducing too much oxygen. Am I being overly concerned with putting it back in? 3. In the dry hopping process, the recipe says to do this for 1-2 weeks. I was listening to a podcast about dry hopping and I took away that a shorter period of time would leave more aroma and longer would start to produce grassy flavors. Is this accurate? Cheers!!