Grover, My rudders have not been modified. I have the short ones. Gary tells me I need to get them extended to train students. But, The runway I use is 100' wide. If for some reason I have a crosswind over 10mph, I simply land into the headwind. So I personally do not see a need for the extensions. On landing in a power out, I make sure I descend at 70+ mph, this will give you plenty of speed for a flare close to the ground. I also have my rudders connected to my pedals. This makes it easy to control on the ground. But, when coming down in a small crosswind with the rudders turned, you must straighten the rudders out just before touchdown or risk a sharp turn and rolling. I've never seen Larry's tanks, but I know he makes and uses nice stuff. You should be getting about two hours per tank, If your not leaning it out, maybe a little over an hour will be all.