A precision machined item mounted on another precision rotating assembly capable of Five thousand RPM or more. And some of you believe it's ok to use it as a jacking / lifting point. Imagine a small bit of metal moving at the speed of a bullet. When a damaged balancer fractures and comes apart. At 2500 RPM the broken piece would be moving at 883 inches per second. If it self destructed at 5000 RPM parts would leave the engine bay at 147 feet per second. Anything struck by bits of broken balancer will look like shrapnel damage from a grenade or bomb. This has happened before. And as long as shortcuts exist, well you know what...