* Taking bigger hit, bankers want CDR to be tightened * Centre cites Modi to push for retail FDI * In free fall: R plunges below key level of 55 against $ * OMCs to report profits in Q4 on subsidy boost * White paper on black money a damp squib, states the obvious * IMD’s Doppler weather radars under security cloud * Supplementing $ flows to shore up R: Gokarn