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Looks like they are replacing the methane transfer tube in booster 7. And its going to be a pain in the ass. Cutting the new tube into sections AND in half vertically so it can fit through the hatch. Might only takes a few days since they go 24/7 when something is a critical path item.
The tube is a pretty simple part. The fix will look ugly (not that anyone will see it) but should work fine.