Yea I have noticed similar taxiing issues. With a light load sometimes you need like 80% power to get the thing just to MOVE. Kinda nuts.
Also notice (off topic) that when you shut down and save your flight immediately, and close/re open the sim and re load the flight, everything is cooled off within like 2 minutes and the Radio, Ignition, Inverter, and control locks aren't in the positions I left them
Otherwise I love this thing. Engine det. problems gone for me after Scott gave me a fix.
"A good landing is one you can walk away from... A great landing is one when you can reuse the plane!"
Intel i7-930 @ 3.8 GHz
ATI Radeon HD 6970 2GB GDDR5
12GB DDR3 Ram (@2000 MHz)
Kingston SSD SATA III (6 GB/s)