It's actually kind of surprising how solid they stay on to the connectors, by the way. Like it's just two little friction tabs but when they in all the way they're IN.
Also be mindful of the clear plastic windows on vortex when turn him to robot
mode.It likes staying on the arm tabs more than it likes stay on the cockpit, at least for mine.
It only stays on to the opaque part by friction pegs but I might glue it for convenience at some point.