Just purchased an Ultradot Matchdot red dot sight for my Performance Center M-41. The high front site will not allow the front ring to attach to the rail. This is a new PC M-41 with the molded rail. The tube of the Matchdot lies on the front site. Cannot move it further back. Do I remove the front site or go with taller rings? Would like to hear from others using the Ultradot Matchdot on their new model PC's. Appreciate !!