What is your typical Hobbs:Tach ratio? I just put my first 100 hours on and my ratio is 100:75. That indicates that I spend 1/4 of my time on the ground taxiing, warming up, or in the air practicing stalls. That doesn't seem right to me. Admittedly, my first 100 hours began in November and I probably saw more warm up time than I will in the next 6 months. But still...makes me wonder if clocks are working right.