Wow, I just pulled my upper bolt and now I see exactly what you are talking about.
First off I found my bolt threads were totally gone and I was not even using that much pressure to remove it, I don’t know how it even felt tight unless previous owners used a whole bottle of high temp lock tight on it. There is no part of that stock bolt that comes close to intersecting the half moon of the ball joint shaft. No wonder they just fall out.
It just seems stupid for a manufacture to put it together that way. Soon as I turned the bolt the ball joint fell out, and I've been driving this thing 60 mph down our roads with my kids in oncoming traffic. This could have killed us when I do my fifth gear wheelies! I have read you’re posts to check these ball joints but I had only made sure the bolts were tight, there needs to be a special “Warring Bulletin” on this subject.
I need all new ball joints , tie-rod ends, and hime joints does anyone have these????