Well, I received the "replacement" magnetron almosdt a week ago, and while it was the same model number, the piece sticking out the bottom was too long, and didnt fit in the waveguide box. After emailing the company, they issued a full refund, but unfortunately that was the only one they had. I tried emailing the person who is listing the other one on eBay to try to get a measurement of the "piece" so I dont have to go through the same thing again, but it has been days and they havent answered. My parents have decided to just replace the microwave, so if anyone would like any HV parts from a microwave which is in otherwise perfect condition, let me know!