have a john deere 2010 quik trak 23hp kawasaki 169 hours on it. in the mornings it turns over real hard 3rd to 1/4 turns at a time for about 30 seconds and cranks over just fine after that. it will turn over for another 30 seconds to a minutes before it starts to fire and then it spits and sputters for about 10 to 15 second and gas just sprays out, even after it done sputtering and then i shut it down and restart it and all is fine. what wrong carb? chaged oil and it was 50/50 gas to oil in it. i checked oils, valve clearance, spark plugs, tested ignition coils, gas, air filters just started doing it yesterday once it starts it fine. and after each yard it would take a few second to start instead of right away like it has always done. and if i would choke it it would take longer to start and even more gas coming out of muffler.