Oversized Prime Beast Hunters Abominus

Hey guys and gals,
After being recomended him, I purchased the Oversized KO Beast Hunters Abominus toy (in takara colors) from sir toys. He needs some work though since Hungar's arms dont lock in well and a few joints feel really loose. Does anyone have recomendations on the fixes I could bring to it?
After being recomended him, I purchased the Oversized KO Beast Hunters Abominus toy (in takara colors) from sir toys. He needs some work though since Hungar's arms dont lock in well and a few joints feel really loose. Does anyone have recomendations on the fixes I could bring to it?