Why does Spektrum make it hard to find out what receivers pair with their radios? I have an SLT2, and I can't find anywhere what non 2-N-1 receiver will pair with it. I want to use that radio with an HPI Blitz I'm building for a teenager to use, and, can't even figure out which 2-N-1 brushed or brushless ESC matches it, let alone what stand alone receiver matches it.