I have 12 different PC power tools, some over 20 years old and still working. However, after less than 2 years of infrequent home use, this tool's motor started making a high-pitched squeak and the RPM's began to fluctuate rapidly. I sent it back to the factory PC service center in Carrollton, Texas for repair. TWO MONTHS LATER I received an unexpected .COD notification from UPS! . I refused the cash on delivery and called the service center for clarification. I was told that the engine needed…