Bit more nerd mode...
Part 145 requires an AMO to inform the author of approved data or other procedures of errors or anomalies. Part 145 also allows an AMO to change manufacturers' maintenance procedures if proved in error or can be done in a safer manner. In such circumstances, the AMO must inform the TC, STC holder or manufacturer but does not need their permission. The MOE must layout the procedures required to do this. Using alternate tools is an example of a change to manufacturers' data.