I have a Toro Personal Pace mower, the Model #: 20018 and Serial # of 220006368. A screw which I beleive helps mount the engine to the mower housing has gone missing and I am trying to replace it. I tried looking at the assembly pictires on Toro's website but was unable to identify the screw that I need to replace. The engine is rocking back and forth so have stopped using it until I can find a replacement. I have attached a picture which shows with a pencil exactly where I am talking about and hope that someone could assist me in identifying the size and length which I need to replace ? Appreciate the help and assistance.