change the oil today. it fired right up afterwards (one kick). loaded into the truck and took it to a friends. I started it at his house and rode it about thirty feet and it died. I can kick it over but its very difficault. It feels like it is not decompressing. I took the spark plug out and ran the kick starter. No problem there it turns over fine but when I put the plug back in it does the same thing. I can put presure on the kick starter and it will fall though slowly but not fast enough to start. HELP tring to ride tomarrow.