I had an issue with my lower ball joint, not being aware of the issue with the nut backing off. I was fortunate enough that a guy had a spare one, and I ordered two in the meantime before being made aware of the castle nut repair. Any way I received the new ball joints from DMC midwest, only to find that they dont have grease fittings, and also the bottom flange by eye appears slightly thinner. And have read an older posting regarding concerns about these ball joints possibly failing. Does any one have any information regarding this? Thanks in advance for any help.