Thanks for the details Keyser! I mailed CBP for a refund as the process looks too complicated for now. I was in Mumbai till yesterday and given the crazy rains, decided to skip the PSK process. I arrived at JFK and I was pleased that they have got rid additional customs process. The immigration officer takes the custom form and you are done. Given that they have kiosks for returning ESTA/B1-B2 and GE, its been quick entry for my last few trips. Only thing I really care for is TSA Pre!