Set my personal best time for the legendarily tricky to manipulate Chubb 7L08 combination lock on this job. Completely different touch to S&G or LaGard or Ilco locks as the contacts can be notoriously faint and further from the drop in on the Chubb lock. This one wasn’t too bad but amplifier was essential. I went from start to finish in 32 minutes. Then serviced the lock and reset the code to new numbers to suit the customer.