Hi I recently purchased an air scribe, it's late, I can't remember the kind right now however it's highly recommended by you folks on this site, off brand but good. Anyways it makes a really high pitch whining sound like air escaping from a balloon and Air comes out around the rubber gasket by the tip. I don't know what it's supposed to sound like, or how it preforms to be able to troubleshoot further. Any help would be appreciated! Thanks in advance.