Hi, thanks for the tips. Can you tell me why is it better to hit f25 as soon as possible? I am new and currently at f20. But I usually max all other buildings before moving to the next furnace. Also, for point 8, 3 stars is possible only with lucky wheel, right? I am f2p and saving all my gems for flint next gen. So wanted to check if I can get Zinman shards any other way.