Following the instructions linked below, after generating my Skarmory, I decided to make it shiny as well:
https://projectpokemon.org/tutorials/save-editing/using-pkhex/pid-mismatch-origin-game-dppt-hgss-r95/
The only problem is that the specific traits for this shiny Skarmory (Nature, IVs, Ability) don't seem to match any Shiny PID after searching through option "a.", even after changing the time of day. I can still generate a legal shiny Skarmory with the wanted Nature, IVs and Ability through the "b." option, but this changes my trainer TID/SID combo, meaning the game treats the Skarmory as a traded pokemon and gives it an EXP boost for fainting pokemon. While this is technically beneficial I would prefer to be dealing with the default EXP values, for consistency and self-imposed "fairness".
Is there any way to maintain the Nature/IV/Ability of this pokemon without changing the TID/SID in the process? I find no search results for a shiny Skarmory in the wild unless I give it a considerably worse set of IVs or Nature. Thanks.