I recently traded my 2006 VRSCR for a 2009 VRSCF. The muscle has stock exhaust and there are some noises that I'm unsure if they are normal. At roughly 3000 rpms the engine makes a knocking/ticking noise that it doesn't make any other time. Also the shocks make a pffff noise every time hit a bump. Is that normal? It still has stock exhaust so I was thinking that maybe my last bike made the same noises I just never heard them....The front brake reservoir also leaks a little do I have to replace the gasket to fix it?