Saying the problem is most prevalent in front of Starbucks, town officials are seeking a new violation and $50 fine for those who park on a sidewalk in New Canaan. As it is, parking enforcement officers may issue a $30 fine under the category “Other” when motorists pull onto the Park Street sidewalk in front of Starbucks, according to Parking Manager Stacy Miltenberg. But a dedicated violation and fine more along the lines of what motorists face when they park in a crosswalk ($75) would be preferable, Miltenberg told members of the Parking Commission at their meeting Thursday. “You know at Starbucks where they have the outside tables?” Miltenberg said at the meeting, held at Town Hall. “OK, you know the sidewalk in front of them?