As I've been exploring this new hobby or habit (can't decide which), and exploring this forum, I have discovered how some juices change over time. I think I'm also detecting changes in SI juices, but it could just be my taste buds are changing. So, what's the deal...do SI liquids change with steeping...are they pre-steeped so to speak...and what about pre-filled cartos? Anyone else notice a difference after a couple of weeks or is it just me? Some companies recommend steeping, but I've never noticed SI recommending it.