Nick,

You have a Super Tigre .51/11-7 in a Kadet LT 40. Good lord, how can you be on the ground long enough to put in more than a blip or 2 or rudder. You should be airborne in 20 feet or less. Heck, with that power in a trainer, you should be able to hand launch vertical. Maybe your problem is you are playing RC car rather than getting airborne. Hold half back elevator, go to full power, give it a blip or right rudder and you ought to be in the air.

I have been teaching flying since 1971 and I have seem more people damage airplanes trying for a long 100'-200' take off roll with an infinitely slow addition of power. I have never understood this deisre to add power slowly. I didn't in a full scale and I don't with an RC plane except for a rare tail dragger, usually scale, with the gear to the rear that noses over on fast power application. My feeling is you want to get the weight off the wheel, tail or nose. I held back stick on a full scale and the nose came up , then the plane lifted off. I hold back stick on an RC plane and the nose comes up and the plane lifts off. Once you get enough airspeed for the rudder to work, the plane normally straightens out. It's the darn wheels that cause the wiggles, zig-zags, etc.