Former Sacramento Bee "three-dot" columnist R.E. Graswich was an early supporter of Kevin Johnson's campaign for mayor of Sacramento. But recent events have caused him to reconsider his support. This column was written specifically for SacramentoPress.com.   King Kevin? By R.E. Graswich Sacramento Mayor Kevin Johnson promised to be different. Yet his first two months have featured one stumble after another. The collapse of Johnson’s self-indulgent “strong mayor” scheme proves Johnson has much to learn as he fills the vacuum of leadership at Sacramento City Hall. Sorry, Kevin wasn’t elected to be our king. The mayor’s failures have been self-inflicted. Kevin has made the quest for more