Hey True Brit - I ride a 2000 TE410 (with happy button). Due to my size (6ft4" and 105kg) i ride the 410 real hard off road. I have never had any problems of any sort, but do an oil change every 5hrs riding and air filter after every ride. She is smooth with buckets loads of torque. After 2hrs of racing my 2stroke mates are shattered and complaining, i still feel pretty fresh due to the easy power delivery and stable handeling. However the Husky does feel a little heavy and lazy to turn in the tight stuff. But as soon as the trail opens-up, its thumper power heaven. Hope this helps. Cheers and good luck.