Changing Genesect drives doesn't work

[Scepty-SSB]

After applying one drive to a Genesect, applying a second drive does not overwrite the previous one. This prevents changing the type of Techno Blast from, for example, Electric to Ice, if the player so chooses.

[Madmadness65]

You must deactivate the first form change item before the second one works. This is also the case for other Pokémon who have multiple form change items.