I just unpacked my Littleton and the drippers are microscopic. They look like #9s, not the #6s I ordered. What diameter should the orifices be for #6 shot? I waited 6 weeks for this little machine, and I don't want to wait another 6 weeks to get the right ones. Anybody know the proper size so I can drill them myself? It will only take me an hour or so but I need the right diameter.