I understand the pitfalls that may be associated with this... and yes, I know.. Google. I guess you should've sent me here --> http://lmgtfy.com/
For 1 of my shutters, it is definitely just sticky so I'm tempted to open it up, if for no other reason than to learn that I never want to do it again. My synchro-compur though has a broken part I fear, so that's still going out.
Give a man a fish, he eats for a day. Teach a man to fish, he eats for a lifetime.