Hello everyone just get back into riding. Friend found me a 2001 Vulcan 800. It has been a project and is rideable now after going over bike with friend. He noticed the front forks bounce to much. The bike has no wetness around dust covers but has been setting in a garage since 2005. Would I need to rebuild or just replace the oil in the front forks. Thanks in advance. Also if needing rebuild is this something I could do?