I have that same issue on my Hasbro reissue of MP-8X.

I also have a ton of loose joints. T-Rex shoulders, robot shoulders and all parts of the hips/waist. I'm wondering about tightening them up. I haven't had time to take a good hard look at them myself, so can someone give some pointers on how easy these joints will be to tighten.

I really think this mould needs to be replaced, it's falling apart.