I have a G2 Laser Prime who is a little on the wobbly side. He seems to have two main issues: The top part of his legs, which pull out of his lower legs, do not stay in place very well and like to slide back into the lower legs. His waist joint is loose. I am a total newbie to Transformers repairs - the furthest I have gone so far is putting clear nail varnish on loose ball joints - and would appreciate any advice. THanks in advance.