Surprised this hasn't been posted yet, but TR Wolfwire / Weirdwolf cockpit joint is very fragile. The yellow plastic is under stress and too skinny out of the box. It will most likely break if the cockpit is opened too often, but the soft pink plastic will keep the piece attached at the pin so annoying but not world ending.
I bought a Takara Weirdwolf off someone recently, yea it already had it happen and seller hadn't realises until someone pointed it out. I still grabbed it from him as it didn't bother me too much. Was gonna attempt to transform him, but the part had mostly disintergrated so I stopped
Now, I was playing with my Mp Starscream, Hasbro first release. Went to transform him, and noticed the plastic around the pins to flip the wings were cracked. So again back to robot mode where he shall remain