Just wanted to update all here in the post, I got that BOB problem worked out a couple of weeks ago, and the machine has been preforming beautifully ever since. I know that I was hesitant to purchase the Keling drives because I had been burned with other unknown elements before, and didn't know much about these. But they have been running steadily for nearly 3 weeks. The heat sinks on these things are huge and they don't really get more than warm. I have a 24 volt case fan blowing across them but I hardly believe it is necessary. Having said that, I am VERY happy with the performance and built in protections of the 4030 boards.
I am beginning to get orders for my Mercury CNC Machines, and I will definitely use the Keling motors and controllers for my customers machines.
And the guys at Keling, while they don't seem to sleep much are always Johnny on the spot with shipping and the like.
Keep it up guys, (and get some rest)