I guess in terms of toon inconsistencies there are a lot worse things to worry about! I like the idea that they chose not to fly deliberately, but it's hard to convey that onscreen. Since there are actual scripted instances of them using jetpacks (Prime borrowing Sideswipe's in MTMTE 3, Dinobot Island etc) I'm leaning toward them being unable to fly at all (though Wheeljack does it later in the series I think, and had something in his tech specs about the ability). So I think I might just sneak jetpacks onto their backs while they're in the air that mysteriously vanish once they land, Op's trailer style... Thank you! Nice work!