I have just purchased a Pila GL4 with the 550 lumen lamp assembly to be used a a searchlight and for general spotlight duties. This light has pretty good throw, but I would like to have the option of a really really tight beam. I would like to have a one or at the most two degree beam that would dramatically in crease the amount of throw. Does anyone out there know where I can get a condenser lense that will accomplish this task.