Some corrections:

Irwin Weiner, who was a bail bondsman, was Seifert's original $ backer. Seifert had worked construction for Weiner and Weiner put up money for International Fiberglass, Seifert's startup.This is the original hook to the Outfit, not Milwaukee Phil or Schweis.

The mob then was using the company to launder the money through the pension fund, Seifert wasn't getting any of that $, it was all going directly to the Outfit.