I bought these wheel spacers 1 1/2" and they are hub centric. What worries me is that when I put one on the nuts they give you only go on half way like a 1/2". The 1997 TJ came with steel wheels. Is this why the studs are a little short? Is 1/2" enough with thread lock to be safe even if they are hub centric? Im an older gent so all I do is tool around,no off road or anything. Do you think I should use them? Will the hold up under just normal driving? Anyone come across a problem like this? thx for any input..