Banshee all of suddent runs like shit. Compression: L 147 PSI R142 PSI. When and if i can start it, it popes and smokes bad on left cylinder. It also has a bit of oil cominf out of the left pipe. If i start it and can keep it running it will pop and soon just bog and die. Reeds are fine. What should i do? I have noticed that sometimes i check spark and it doesnt have it and sometimes it does. Also have noticed a few grips of oil leak out the bottom of motor looks to be on the three cap nuts. Any advice helps