Hers be a story -- while walking towards the shower tonight I stopped and looked at the mess that is my Classics/Universe 2.0/Henkei shelf. I picked up Henkei Cyclonus and proceeded to transform him. On the way back to robot mode, I found myself with an arm that was no longer attached to the robot mode.
I spent a few minutes trying to re-attach but trying to force the the little clip over the pin was proving to be a bit more difficult than I thought (or could be bothered with) and decided that before I busted out the tools and made things worse I would stop and ask for guidance.
Below are two photos I have stolen from http://www.moonbasetom.com
They show the offending area circled
So, guide away.
Or laugh and make fun of for breaking a toy.
And the moral of the story is - leave transforming toys till day time when you have lots of time.
Or transform things more regulary than once a year.