Frankie the Fixer Then and Now

He was a South Philadelphia plumber who hung with the wiseguys ... and loved it.
Now he's a government witness ... and hates it.

"I turned on my family and my friends," Frank "Frankie the Fixer" DiGiacomo said Thursday from the witness stand in the racketeering trial of Philadelphia mob boss Joseph "Uncle Joe" Ligambi and six co-defendants. "I became the…