I just picked up a G1 Grimlock for £10. He has a few faults... His robo arms/dino legs are so loose they hang down and will not stay in any position other than vertical (in dino mode this is fine as his weight stops them giving out. His chest doesn't lock in in robot mode. His dino toes are incredibly loose. His tail doesn't peg together very well His dino arms squeak. I would like to restore him a bit if I can. I realise I'm not going to be able to work miracles, but I'm asking for advice, particularly on those loose joints. I tried tightening the screws in his shoulders. They move, but nothing actually happens, and I have no idea how to tighten pin joints, or if it can be done at all. I'm not particularly skilled at customs, and my toolbox consists of a craft knife and a screwdriver set. I don't want to break the toy any more than it is already. I realise it's next to worthless, but I'm not doing this to resell, it's just for a love of Grimlock. I want to keep the figure even if I can't improve its condition. Any help much appreciated.