>>10574385The swingbar that holds the engine in place is usually so overly tight that when trying to move it during transformation the weak plastic snaps first. Honestly, it doesn't mean much as you can just reinsert the engine after you've transformed dragstrip & have it hold in place just fine. It only happened to my racing one, my G2 Dragstrip has suffered 0 breakages.
There is also a problem with the shoulders on the original Dragstrip which causes them to break off but that hasn't happened to either so I'm guessing they fixed that flaw at the very least. Racing Dragstrip fits really well on a G2 shelf as well.