So I bought a HA Jazz from Ebay and it arrived yesterday. But during transformation I found the shoulders could not bend down as far as they should which means in robot mode the arms are bent back all the time and there is almost no articulation in them. Is this a construction error? Has anyone had this before? I don't know if HA Jazz is KO'ed, I looked around a bit but couldn't find anything. Any tips on how to fix it? I thought I maybe could unscrew the pin and take off the arm and sand brown the part down a bit so it would fold in as far as it should. Or as I just mssing something relaly obvious?