1: Get the carbs synced ASAP. This is super critical, especially on a "twin" bike. 4-cyl bikes can get away with poor sync more than the 2-cyl ones can.
2: Make sure the caps for the vacuum nipples are on, and not leaking.
3: Double and triple check that the carbs are seated properly in the intake boots and airbox boots.
4: Make sure the air filter is installed properly. (Yes it only goes in a certain way as it is tapered.)
5: If you or the previous owner replaced the stock airbox with "pod" filters make sure the jetting is correct.
I have come to terms with the possibility of dying while riding, life has a 100% death rate. I would rather live having fun and end up dead in a motorcycle crash than never do anything fun because it's dangerous and I might get killed. No one makes it out alive anyway. - From a friend on another forum, used with his permission.