I searched all over and I see some good points but here is my quandry. After my 5 1/2" RC lift my driver side ball joint assembly is about 1/16" from the wheel and it does audible and visibly rub sometimes. I have factory 18" 6 lug rims. I need just 1/8"-5/16" to do away with the issue. I know for this small amount of spacing using universal 6 lug spacers isn't an issue but could I use some mag washers instead? Not a question of $ becuase what is another $20-$30 bucks on a 08" GMC Sierra I have lifted, bought tires, done exhaust and air intake work, could have bought a Porshe by now but I can get the Mag washers local without ordering and i am not exactly patient, I would like to do it this weekend if I can. So the question is can I use the Mag washers or should I order the spacers? Thanks in advance.