Heatshield rattle

[F4RS1D3]

I have a nasty heat-shield rattle on my 2003 Legacy 2.0 GT but this can be applicable on other Subaru models also.
Rattle is mostly at start-up and idle when engine is colder.
Not sure if it is the headers or up/down-pipes heat-shields rattling.

Is there a way to fix, weld, new bolts, or better to just remove heat-shields and wrap all the parts in with a heat-wrap instead?

[berndp]

First Legacy post!
Congrats.

My car(Forester) also has those rattles. As far as I can figure out, it's on the downpipes.....
I managed to tighten up the clamps around the CATs by inserting left-over internal "padding" from when I broke out the CAT cores. You could use S/Steel scouring pads (similar to "Goldie Locks")

The problem with the shields around the downpipes is that the bolts are so burnt (corroded), if you try to loosen them, you just bend/tear the shields.
I tried pumping in some silicone around the shield clamps, but that only lasted a very short while.

I suppose, having removed the CATs, these shields no longer serve any purpose?

So, if you find a solution to this, please share.