Hi, I have a craftmans riding lawn mower model #917.272761, a few weeks ago I was cutting grass and when I turned a corner it sounded like it was running out of gas, I check the tank and it was still half full, then I checked the fuel filter and it was clear. Then I noticed that the choke was closed so I thought there was a return spring issue so I bought a repair kit and that sloved the choke staying closed problem. But then I thought the plug probably fouled since the thing was flooded so I replaced the plug. Still won't start even if I put gas manually in the carb. So I pulled the plug and left it out to see if it was getting spark, Not enough I am thinking. So I'm now thinking I need to replace the Magneto-Armature. The wire to the spark plug looks burnt and melted. But before I'm going to spend the $55 to get one I did take a compression test even though the engine turns over really slow sometimes and other times it turns over fast. The compression I got was a little over 120 lbs. Is this enough to have the proper combustion to run? Please advise