(Portland, OR)  --  A convicted felon is accused of firing off a gun and trying to start a fight in a north Portland neighborhood.  Around 8:00 Saturday morning, police were called out to North Argyle Street on reports of a man picking fights.  After a traffic stop, officers found guns and ammunition in the possession of Mario Manuel Ugalde.  He was then booked into the Multnomah County Jail on three counts of felon in possession of a firearm, unlawful use of a weapon and driving on a revoked license.