To make a long story short, from July 2000 to December 2018 I was a proud owner of a pair of Juliets plasma frame until I irresponsibly lost them doing some Xmas shopping. Wanting to have another pair of x metals in my lineup, I took a chance and decided to buy a pair of used Xsquared on eBay instead another pair of Juliets. I found the thread that has the checklist on how spot fakes. All the screws are in the right places as well as the gaskets, but the frame feels like plastic. I will say that like my Juliets these have no serial number on the stems. Are there any other "tests" to figure out if the XS I bought are real or fake. Unless I'm just used to the feel of a plasma frame. I have 30 days to return. I'll take all help and advice. Thanks