Hello, I just tried to make my first batch of stannous chloride, I followed Steve's direction on the chemical list, 30 ml hcl 2 grams of tin powder and heated until it started to fizz. 20 min later tin is still dissolving, is this normal? Do you wait till all tin is dissolved or can I start using right away? I cant find any posts that talk about this. Thank you for your time reading this post.