Just a few questions about Stalhrim.

1) Does the 'Stalhrim Source' location respawn? I've visited it every so often and so far, it hasn't. Kind of svcks as Stalhrim is otherwise pretty hard to come back, and very expensive.

2) Can you find any in Skyrim? I thought it might be like Dawnguard where small changes were applied or new features were added to the vanilla content as well. I'm not totally sure but I had a hunch there may be a few Stalhrim Ore locations added into Skyrim.

3) Kind of related - can you change the Deathbrand Light Armour to Heavy Armour? I know that some quests reward you with armour that depends on which of your armour skills is higher. Is Deathbrand like this?

Thanks in advance.