I don't have GX-03. But #2 is difficult to fit into # 3 during transformation in GX-50. The yellow paint of #2 might be easily scratched during insertion into #3.........:56:
Is it the case in GX-03?
In general, the paint of GX-50 is too "thin". I have a scratch on the red paint at the back of #3 after I put the cannon on its back.........:56: