I took it off to clean it up and get out some scratches. Does anyone have a good technique for reinstalling it? Seems like I might need to grow at least two more hands.

I just picked up an RX in fine working condition that I wanted to clean-up a bit--there were some spots on the platter. Foolishly not researching beforehand, I lightly used some Cameo aluminum and stainless steel polish, cleaning after with soapy water then just water. That unfortunately didn't polish but instead slightly dulled a portion. Then