AMD Front fenders.. Extension fit..

Due to the front fenders just being hammered on this 71 Demon.. I opted for a pair of AMD's.. The pot metal front fender extensions fit well for garbage.. fenders are to wide up front/top leaving me at least 1/8" gap between extension and where the edge of the fender and the hood will land.. with some fabrication this could be remedied.. although I thought I would ask if anyone had experience with the fiberglass extensions and their fitment? Possibly easier to modify the fiberglass extensions to fit over attempting to modify the AMD fenders themselves.. Any ideas?