They do not deserve our financial endorsement. I can see why many users may be deceived into thinking they have power meters. But the one I have is not constant and needs calibration or numbers on one pedal fluctuate. It all starts with batteries really, and I have to compliment Quarq SRAM for consistently getting PMs right. Just on the installation fiasco, on Shimano cranks, adding the spacer creates 3.1 mm clearance between pod and crank arm while removing 15% of threading inside the crank. Wahoo specifies min 1 mm clearance. Wahoo chief pedal CS expert says always use washers. Other tech support agents say No need if you already have 2 mm clearance. Varying YouTube reviewers with Shimano cranks were told not to use washers. Anyhow eclectic support even for installation…