Don't worry! I use AE's aluminium screws everywhere in my car (except for armmounts and motor) and didn't have a problem for the last two years. You only have to accept that you cannot use brutal force to tighten them. For maximum weight reduction add AE's titanium ballstuds to your car.
Haters will tell you aluminium screws are to weak and will not work bla bla, but it is simply not true
