What to do about this crown?

[Garandy]

If I fail at fixing this myself, BDL is my plan B.

Roger, I'll gladly take you up on your offer. Would love to buy a few sets. Fryolux solder paste eh? I see several different flavors online. I'll have to see if something similar exists in the US.

And yes, I did take note of "careful" and that is the plan. Last thing I want to do is wreck stuff with too much heat.