Printer was simply trying to go too fast! Someone on the RepRap Forum suggesting I try a slow down and it worked. I was trying to print at 60mm/sec. With the same printer he indicated that he prints at 20-30 for customer work and 40 for his own. In fairness Wanhao Support had said to slow it down to 50 but I was running at the default for the printer from Simplify3D and was being stubborn! In a post or two I will show some results.
Did you turn Acceleration in the Wanhao settings under General? This makes a lot of difference and allows you to set the print speed to 90 mm/s in Simplify3D (not the actual print speed but the accelerated print speed)
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