Redneck gun smithing - re drill gas tube when already pinned

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So I pinned a gas tube to a gas block and When I was doing it I let the gas tube slip.
It's in the incorrect rotation.
Could I just drill through the gas tube to crate a tube gas block with a dremel tool drill? There would still be metal around the edges so it would still remain one piece.

Another thing, my upper and lower has the slightest bit of wiggle room and I managed to fix that with some aluminum foil in between. Very right fit now.

I also have a dolos gen 2 system(sucks, barrel wiggles a lot) and I fixed the barrel wiggle by also adding an aluminum foil ring around the part of the barrel that goes into the receiver(right below the ring) and also some wrapped around where the dolos slips over. Now that barrel has pretty much no wiggle.