Builders FirstSource (BLDR) CEO David Flitman with the inside story of supplying a booming home building market amidst surging lumber prices, shipping woes and labor shortages ($5,000 signing bonuses for truck drivers?!?) With flagging US growth, Paysafe (PSFE) sets their sights on Latin America. What happens next after Sonos (SONO) received an early big win in their patent lawsuit against Google? It could take longer than they want. Why Niu Technologies (NIU) saw electric scooter sales soar in China but still can’t get product to the US in size. The Drill Down with Cory Johnson offers a daily look at the business stories behind stocks on the move.