My attic stairs are old and rickety, but I don’t know what type to replace them with. Do you recommend any particular brands or materials, such as wood versus steel? Also, I’ve noticed complaints in online product reviews about the width of their attic stairs being smaller than advertised. I have roof trusses set at 2 feet on center, so it sounds like I might have to shim the new stairs to get a good fit. Do you agree?