Yeah no, I've been to the Lippert page. I was wanting the part numbers off the labels but it's not important now. Craigslist had a pair of motors for 80 bucks but my research revealed them to be the first generation that is now obsolete.
I may have the obsolete model in the bedroom slide but maybe not. The 300:1 was born in 2011 so I may have that model. The living room motors have been replaced, last year, so they maybe the 500:1.
Good price for a spare pair but they would have to be replaced as a pair and I don't want to mess with it.