I recently installed XEIDs on my 2007 Ultra Classic . Only other mods are reinhart 4 " slipons and a vance hines naked air filter kit. The bike now has a very erratic and rough idle. Idle speed fluctuates between 800 rpm and 1200 rpm at stops.Occasionally sputters or stumbles just off idle. No check engine light on, Has anyone else experienced this ? Could it be running too rich now ? Any help would be appreciated. Thanks