I got it quite a while ago but it was my first time to transform it last night, I had some problems: - the head can't be pushed forward in robot mode. my thumb already turned red with the effort, it just won't budge. anyone else encountered this problem with the WST Grimlock? - the screw on the left half of the chrome part of the tail fell off, along with that tail part. i want to tighten the fit when i put the screw back in, can i use nail polish on the screw or would a bit of crazy glue be better? Thanks in advance!