Looking for advice on how to combine the shipping modules display on the Checkout Shipping page into one "card". Using bootstrap template, 1.5.8, USPS shipping plugin. Basically, I have flat-rate shipping enabled but all of these orders are shipped via USPS anyways (first class package). I have USPS enabled to give customers option to upgrade to Priority at the calculated rate. I would like the "flat rate" option to appear as a radio option under the USPS card header rather than have a flat rate box and a USPS box. Suggestions? TIA!