This is going down in the weeds, but did anyone buy a set of these A-Arms new, and if so, did it come with a tool to adjust, or describe the correct method to adjust these other than the obvious hammer method? I would hate to bang on and damage the virgin aluminum. Thanks.

 

I would use a rubber mallet before a hammer.

 

I will probably try a hammer on a small block of wood. The slider portion has a couple of holes in it, that kind of look like they might of had a tool which seated in them, but I haven't heard from anyone that knows for sure.