How Do I Fix Old Tasting Espresso????

So I've been having a problem with my company's espresso for the past few days. The espresso we use is normally pretty floral, chocolaty and sweet. For the past few days, however, it has been tasting very old, charred, and smoky (in a bad way). I'm using a La Marzocco FB 80 with triple baskets. The machine is set for 202 degrees and the espresso was roasted on the 7th. Ive tried different doses and drop times but nothing really seems to help. Is there anything else I can try?

The weather is also horrible outside. Its super humid and hot out. I'm not sure if that would contribute to it at all...

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