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I’m not sure just what you mean about increasing the Z-axes maximum travel? The problem was that the limit stopped the Z axes travel short of the bed and did not allow the print head to reach it. Moving the limit switch down allowed more travel so now the​ ​head can reach the bed. If there is some setting in the firmware for that It would have no effect once the Z travel hits the switch.

I’ve been going through a steep learning curve for several weeks trying to get up to speed on this technology. You are only the second person to have responded to any question I have posted. The latest challenge is/was bed leveling, which turned out to be my most serious issue. I just yesterday made a modification to the unit to allow easier leveling. It’s posted elsewhere in the forum. Thanks for the response, Joe.
George