Berrymans is a gasoline addictive...I probably put 3 or 4 oz in a full tank. I pulled the plugs this morning, and did a cold compression check on it...#1=160, #2=160, #3=135 (agh), & #4 =160...valves or rings? Sounds like I need to start taking her apart. Any idea if I pull the motor how much a...