I did not personally encounter a wiseguy BUT, I did work with the son of the guy who taught Richard Kuklinkski how to do the cyanide and bomb stuff...He NEVER talked about it. Who would want to talk about his dad's murder.

Kuklinski eventually whacked the guy out. His name was Robert Prongey. So was his sons name....His son now lives in Canada.
He drove the Mr. Softee truck in Hudson County but I was just a kid then (born in 1978)
Not sure when Kuklinski whacked him out.

This Kuklinkski story was one of the very true ones.
I live like 1 mile away from Kuklinski's house in Dumont and always imagine him returning home on Christmas Eve after whacking someone. CRAZY!