I recently got a buy on a 720 toggle trip plow on a consignment auction ($400.00). It was 6-18's witch was more plow than I could handle so I cut it down to a five bottom. My question is in the owners manual it shows the front spreader plate moved to the left one more set of holes on the five bottom than it does on the six bottom. How ever, it also shows the optional setting on the five bottom being the same as the six bottom on the normal setting. Should I move it?? Im In north iowa, heavy,heavy, black soil with no rocks. Also I assume Ill want the excentrics on the bottoms set on deep suck?