rear coil packs are know to go bad on these models, i have one of the 3010 myself, the carbs are a problem child with the enthol gas mix, i had a float problem that led to washing my cylinders out, had to re-hone and re-ring the motor, check your compression on both cyl. also watch out for blockage on the air filter and the frame tube, had a old hornets nest that fell down the tubing and blocked the air filter, the 3010 are good machines but do have there quirks, if your having a idle problem there is a great write up on that, and the 3010 do hate cold weather,