Having trouble getting banshee to start first time each day. It takes 15-20 kicks to start. After once starts seems to start ok. Also seems to make popping noise on deceleration. otherwise it runs fine. . . Could I have a crankseal leak or base gasket problem causing a lean condition? I have tried rejetting, changed timing on dyna-ignition but problem still there. changed coil,plugs. compression 160 psi,jets 310,32.5,120 octane. sea level, t-5 ,lid off. does anyone have some suggestions.