when i tried to seat the extended studs i actually stripped one of the them. i used an impact and i think it was too powerful and just ripped the threads apart. it wasn't cross threaded cause the nut went on smoothly all the way.
although it's bad to smack the wheel bearings like that, it was fun.
i mean, i did it without pullin the wheel bearings off. ran with them for about 5months and was fine. i don't know about any longer, changed to 5lug. Good luck with it.