So I got my Gen2 Fuel kit yesterday and I had a Garage Door to install last night (100+ Self Tapping 7/16" screws and about a Dozen or so 7/16" x 2" wood lags). I don't know if it's My Impact or the mode in general, but the Self Tapping screw mode is completely useless. I tried it a few times on both bare metal and pre-drilled holes and every time it would start impacting right away and would only put the screw in half way before stopping entirely. Modes 2 and 3 worked amazing, but on mode 3 I did feel like there was a risk of stripping things out. Overall I am really happy with the performance, but I expected a lot more out of the Self Tapping mode. On previous Door installs, using a Ridgid impact, I would use a full battery and the impact would be so hot at the end that you could hardly touch it. The Gen2 Fuel impact ran the screws in much faster, never got warm and at the end of the job I still had 3 bars left on a 3.0 battery (I didn't have time to charge the 5.0).