Handlebars are not stock and I would clean the rust off the rear drive so it doesn't mess up the belt check the primary adjustment bolt on bottom of bike if the spacer is still there and the bike is over a thousand mile on it then adjust your primary to spec and I would change oil in trans and motor if the primary wasnt done you can bet the bike wasnt taken care of very well its a cheap and easy service if they skipped that what else didnt they do good luck