Got my Surefire SOCOM flash hider (will be attaching a SF suppressor when it arrives). The instructions offer two options: Untimed or timed. They give no benefit one VS the other. Am I right to assume the only benefit of timing it will assure the SF suppressor unlocking mechanism will be in a convenient rotational orientation for quick removal? Seems that if you can leave it untimed, then why not and avoid adding unneeded parts (shims)? And if I do have it timed, why do some here say to leave off the spacer when the instructions for Scar 16 say to use it (reversed). I've read people say to leave it off, but I don't think I understand why it's not needed (that is, why do you think SF wants me to use it VS why do you think I don't need to). Thanks for any advice.