Welcome to the site, the best thing you can do to help yourself is to acquire a service manual. Either a Honda factory or even a Clymers (which are pretty easy to get on ebay). The reason I say this is there is a lot in the process to get to the carbs (taking off the tupperware can be a pain). As far as the fuel in the airbox & hesitation goes. It could be a number of things. You did not tell us what year your 1500 was, some of the early years had hestitation issues.