The Energon Pub

I recently notice that my Classics ultra Magnus ares are somewhat floppy in the sense thaat he cant hold his big gun in certain ways or else the are will flop down. I didnt pay much attention to is at first cause I thought it was simply the sear size of the gun that was the problem. But when I got my Classics prime I noticed he can hold his big gun just fine in any positions without it flopping. Is this a common occurence for the classics Ultra Magnus? Is there a way to fix it?

My Classics Magnus' arm is just fine, except for few paint chipping here and there.

My Ultra Magnus does that as well but I thought it was just mine.