Elements were made not from stainless steel like original.One element was made from round bar not hexagonal bar- will be problemwith assembling and dissembling .Second element instead hole for Allen keyhas round hole-will be problem with assembling and disassembling .Additional we sent with order file wrong size of thread ,it is ourfault.Sorry for inconvenience .Thread to be 16.3 mm not 11.3 mm as we wrote before.Please find attached photos and scan with corrected size of element.Hope problem can be sole ,by pick up delivered elements from ship and remachined it.