Farmtrac 60 Injector Pump leak?

[Farmtrac602003]

I recently changed the oil in the 2003 tractor (1000+ hours). I topped off the injector pump oil at the same time with the same oil. Since then, as expected, some overfill drained out the drain from the drain line. Now though, as the tractor is running it seems that there is a pretty consistent drip. It doesn't quite smell like diesel but does seem to be a little reddish (offroad diesel color).

I added marvel mystery oil to the engine oil (not the injector pump), I added diesel kleen to the last tank. In addition to the injector drip I am also seeing a light mist/and oil dripping from the crankcase vent tube.

Tractor is running well, oil pressure is about 50 psi, Oil level still the same, no overheating.

Should I worry?