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| I was at a training once, and they said that the "too shallow" or too steep message appears when the soil texture at depth MIGHT cause an issue with flow. So you may have to increase the min grade, or pipe size to increases the water flow if it is a long stretch that is flat. If it is a short distance, I don't worry about it.
If the main is too deep or too shallow, and the connection offset makes the connection outside of your min/max limits, you get the connection error.
Takes some playing, but gets easier the more you do.
Edited by nei 9/2/2018 22:10
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