MADAWASKA, Maine – Parking quickly filled up and guests started parking down the road from Madawaska’s Multi-Purpose center as the town’s Top O’ Maine Trade Show kicked off on Saturday morning. It is the largest trade show north of Bangor, and this year it drew in guests from Maine and beyond, including some from Boston and Rhode Island. The event, which is now in its 37th year, was organized primarily by the St. John Valley Chamber of Commerce,…