Why is my gst so hard to start. I've ran about 14 tanks and everytime it takes aleast 5mins. to start. Does anyone else have this problem. It keeps flooding out and the only way i can get it started is to losen the glow plug and thats after about 4 losing and tightings.I'm running 30% nitro and the highspeed needle is 3 1/2 turns from close, low speed is factory.