Yes and no. I have a chiller, quite a powerful one at that, keeping everything cold. I don’t think that my columns are warming up to cause this. Although, it is harder to keep your solvent to temp having to spread across a larger diameter material column, if it is not being chilled. If you just put room temp material in the cold (broad term) column, without letting it get down to temp, then yes you are correct. But, if it was chilled and everything (solvent and material) is relatively the same temperature, then there shouldn’t be any temperature difference. Granted. Certain strains have more than others, how long the material has been in the column getting to temp, resonance time, amount of solvent, all of these play a role in what you end up bringing with. My pictures were from Gelato, which has been notoriously fatty, from different grows. Other strains just don’t have as much as that one. Just as some strains are good for whipping into a batter, and others are too dry.