Instruct: Classify the given Amazon review as either positive or negative.
Query: Doesn't lock together quite right

Warning: once you transform this toy into robot mode, you will NEVER be able to put it back into perfect vehicle mode. The front end keeps popping off instead of staying in place. There's this pedal-like structure underneath that's apparently supposed to do something, but I don't know what it's supposed to do. The front end pops off whether the thingie is pushed in or extended.