I would encourage anyone that has a question on the boards posted on my website to post their questions there in the bulletin board. http://pminmo.com/phpBB2/
I review it multiple times a day. Here I'm lucky to catch such a posting because of the volume of posts on a subjects.
As to your specific problem, it's likely a pcb problem (open or short) associated with the following:
IC1 pin 1 or 2
IC3 pin 1, 3, 4 , 6, 11 or 13
IC8 pin 5 or 9.
You can use the onboard logic probe to see if those pins change state when you change direction.
The above aslo assumes you have the software setup correctly.