Hey guys i need some help on valves again. Mower was doing the hard to start thing again this year where the starter couldnt turn through the compression stroke. so i adjusted the valves set em both around .004 turns over great and starts up fine but it smokes a bit the whole time its running before i adjusted the valves this year i jumped it off with the truck ran great and no smokeing so i am thinking that maybe i got one or both of the valves outta wack thats causing the smoke any advice on where to go from here fires right up every time but smokes just a litte bit while running and puffs out a tad more when i cut the motor off ?