Dana 30HP Pinion Shims and Oil Baffel?

I'm swaping gears in my dana 30 hp front axle and subsituted the oil baffel thickness with shims for the setup and then planned on putting the oil baffel back in once I was complete with the extra shims that are needed. My problem is that the overall shim pack that gives me a good pattern is .024". The oil baffel by itself is .020" The thinest shim that came in my kit (Motive Gear) is .010". Does anyone know where to find shims thinner than .010" ? I need a .004" shim or something close.