Heat riser stuck

I was. But even with the welded type, what's to stop you from grinding the weld loose, making the repair and putting it back together and rewelding it? I mean really. This is a damn heat riser we're talkin about. What happens when you run into a real problem?
Cutting the weld loose is not an issue, remember I am the one that suggested that it would have to be done in the first place. I never said it was a major problem but I would prefer not to pull the manifolds cause then I am opening a whole nother can of worms so I was looking for suggestions on making the repair on vehicle.
I take care of real problems when real problems come up and that never means running to an on-line forum to ask people for their advice on what I should do.