Thank you. Are you saying an actual DMC fast tool works with this? Or is there a different tool with the same name. I have an original Dover fast tool. I also have the IMS software and laptop fr the tac 50 but I’m less familiar with it. I have a tac50 manual with a self study guide but it has little to nothing about the IMS software or its operation. I have found a list of door parameters that will be helpful. I have 35 years in but this ones new to me. JOY!