Nitro's can be frustrating. But once you get it going there's nothing like it. Some days it don't want to start without a hassle but one day of feeding my savage a half gallon of fuel running tank after tank (no battery's to charge) can make up for all the rough times. Once you learn the sound and feel of your Nitro its not hard to figure out what she needs to run right. Its just my opinion but I love Nitro's!!!!.