High Nickel and Iron Oil Sample

I would not be concerned as long as the filter and mag plug looked good. The lab I use has the universal average for iron at 48, and nickel at 3 for a 40 hour oil change interval on the 912is.  My last sample was 63 for iron and 3.2 for nickel, with a 52 hour change interval.  I have the newer style gearbox with the oil spray nozzle but I suspect much of the iron comes from these gears and dogs. Take the sample the same way every time, a midstream catch is the best.