rejigger

[ree-jig-er]
verb (used with object) Informal.
  1. to change or rearrange in a new or different way, especially by the use of techniques not always considered ethical.

Origin of rejigger

First recorded in 1940–45; re- + jigger1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018