u/fehcat

I bought a 2013 Endura Pro for $30, it was listed as fully functional but when it arrived some of the keys didn't work; I assume that this happened during shipping. Besides trying to reseat the keys with the springs and cleaning it with compressed air, which I've already tried, what else can I do? I don't care enough to spend the $100 (since it has an integrated pointer) to get it repaired by Unicomp.