Yep I noticed that the drivers are incorrect. what kind of problems with I have with the 4988 drivers. From what I saw online it looks like they have a slightly lower amp capacity and will only handle 1/16th stepping. is it the amps or the stepping that causes the issue? it looks like the correct ones are pretty cheap anyway so I was thinking that I would just buy the 8825 drivers on top of this. Alternatively, I could just piece it together. Are there any other issues with this kit?