I brought this EMD F40PH AND I AM HAVING TROUBLE GETTING IT TO RUN.I HAVE TRIED TO CLEAN IT BUT THAT DID HELP A LITTLE,MY QUESTION IS WHAT CAN YOU USE TO GIVE IT A GOOD CLEANING THAT WILL NOT HURT IT.I BROUGHT THIS FOR A LITTLE CHILD WHO DOES NOT HAVE MUCH MONEY AND HIS PARENTS ARE IN A BAD...