It does matter using the -9 hex file -- the -10 is the wrong one, it's for a different board. The only potential problem I can see is the SH pin of the Winford connector. Assuming you clipped the pin (you should), it may rest on the wire that's coming from D1 and short it out -- that would create ...

Add me to the long list of people building one of these. And to the short list that can't get it to work quite right. Setting up on Windows XP (with the eventual goal of having it also work in DOSBox). I've got several XP laptops to tinker with, all are USB 2.0. I have a Sidewinder 3D Pro Part ...