[retread]

I have been having a little bit of difficulty finding details of just what were the problems associated with the (infamous?) Liberty engine produced in the U.S. during the later stages of the war. Other than the fact it was a large engine and apparently oversized as well as overpowered for many of the airframes.
Were there mechanical problems associated with the engines as well? Also, does anyone know the original designer and/or manufacturer? Apparently this engine was known as a real mankiller. Was it just ahead of the curve or did it have fundamental problems in design and/or manufacture? :-/