For some reason it won't let me use the search feature. Can someone explain that one to me? Do I have to post a certain amount in order to be able to use that feature?

You should be able to use the search feature. Some forums have you register before you can use it (I don't remember is UG is one of those) but other then that you should be able to use it right now since you are registered.
Ultimate Guitar Set Up Q&A Thread─┤