Newbie here. i tried searching for similar threads but could not find..here's our situation. We are trying to get a rain effect on stage with a source 4 leko.50 degree 750. But its just not bright enough. I'm not sure if we are using the wrong fixture. Pls. help. the throw distance is about 60 ft. off the house electric. stage is 60ft wide 30ft deep from proscenium.