A motorcycle mechanic

[snapper]

A motorcycle mechanic was removing a cylinder      head from the motor of a Panther M100 when he spotted a well-known      cardiologist in his shop. The cardiologist was there waiting for the      service manager to come and take a look at his car when the mechanic      shouted across the garage,  "Hey Doc, want to take a look at      this?" The cardiologist, a bit surprised  walked over to where      the mechanic was working on the motorcycle. The mechanic straightened      up, wiped his hands on a rag and asked, "So Doc, look at this engine.      I opened its heart, took the valves out, repaired or replaced      anything damaged, and then put everything back in, and when I      finished, it worked just like new.So how is it that I make £16.000 a year      and you make over £1m when you and I are doing basically the      same work?"
The cardiologist paused, leaned over, and then      whispered to the mechanic.....
                      "Try doing it with the      engine running."