The race for a permanent chairman of the Railway Board is getting nastier and more petty by the day. Insiders said a section of the senior officers' association is deeply discontented after an investigation was re-opened against a retired officer solely on account of factional feud between various camps. The case relates to the purchase of, of all things, perfume dispensers for railway coaches and was closed both by the Central Vigilance Commission and Central Bureau of Investigation but was re-opened just to kill the chance of one of the contender for the top job in the Indian Railways.