i bought a 94 sportster a couple of months ago and noticed at first that i had almost no reserve in my tank when i ran it down,later it started stalling and running rough like it was starving for fuel ,checked fuel to the carb , it was getting plenty , finally i took off the carb to check the float level and found that the vacuum control hose was disconnected from the back of the carb , so i set the float level ,reattached the hose and tested the bike out...it ran like new , now im running it in hopes that the reserve will work when it gets low ! hope my solution to my problem helps some one in the future ! thanks