It would have been easier to have a second person help hold it in place but I was able to change the time on my 3.5 Ecoboost. My only issue was the lack of a HIGH QUALITY TORQX bit for cam phasers. I only removed 3 out of 4 due to broken 2 torx bits. You are here! But that's not the tool's fault. Maybe I wanted to make it a little more complicated. It wore out a little after a single use, but if you only need to use it a couple of times, that's probably fine. Helps keep it in place to prevent this from happening.