Just a quick note to say I've uploaded a copy of the original mudpond.org version of AirWrench to the Warbirds Library (FS Add-Ons Library > FSX Add-Ons > FSX Utilities).
This version is free of charge for anyone to use without restrictions.
P.S. Do you plan to develop any tools to help/assist with creating/fixing FMs for MSFS2020?