Style 3370 Strapless Bra is actually really a great style for smaller frame and fuller bust. We sell more 30 and 32s then any other band size in this style. I wonder if maybe you needed to try 28 back in this style as we offer that as well. If you feel that 30FF fit well in the cup, but still was too big in the band, please try 28G instead and see how that works out for you.
mab from FL