Well weight of course makes a difference but that sounds a little low. Have you done a tune up recently? If not, you should. Either new points or dress the old ones. Check condensers. Check valve gaps. Make sure timing is on. Maybe a good carb clean. Set your mix and then sync. Another thing is maybe a clean air filter.
Without more info on mods done to the bike, I cant offer much more.
The ride IS the adventure. The destination is just to get gas!