I was wondering what you have observed. We had a guy whose soil tests came up over 50 ppm on all of his fields. The recommendation basically stated that he wouldn't see any yield increase from the use of starter but that he might have better early vigor in a cold spring. He was a little apprehensive about not using any starter. I'm sure that I sampled the potential different management zones within his field separately.
Plants have the ability to take up the amount of needed nutrients and to leave excess in the soil.
If your nutrient levels are in the medium or high ranges, there is no need to change anything. Soil pH should be between 5.4 and 7.8. Trying to balance soil nutrients means you do not understand plant nutrient uptake and soil chemistry. Starter fertilizer will enhance early growth which may have a yield advantage or no yield advantage. If P, K, S and Zinc are fairly high just use N in 1999 to save a little money.