"The original poster's questions highlight a lack of understanding of the technical requirements for installing a CycleOps PowerTap G3 power meter. Firstly, it's crucial to note that compatibility issues with cranksets and bottom brackets are major concerns, and failure to address these can lead to inaccurate readings. Furthermore, proper alignment and calibration are critical, and without specialized tools, it's likely that a DIY installation will result in subpar performance. It's surprising that the poster didn't mention the need for a torque wrench and a precision alignment tool, which are essential for a successful installation. In conclusion, having a professional mechanic handle the installation is highly recommended to avoid these potential pitfalls."