DISSATISFIED!  i ordered a free standing market umbrella base for the 15' by 9 ft rectangular umbrella. I asked him if it would work with my patio umbrella that I purchased from you a couple of months earlier.  He assured me it would.  IT DOESN'T WORK, THE INNER DIAMETER  IS TOO SMALL. FOR THE UMBRELLA SHAFT THAT I PURCHASED FROM YOUR COMPANY. NOW I'M STUCK WITH A 57 DOLLAR PAPERWEIGHT.