If no change in timing with the Check Engine Connector jumped, then it's a bad (or unplugged) TPS, a faulty harness, or a bad ECU. Even with the TPS...
Did you ever check out the van at the Pull N Save in Gilbert, it should have those parts or hell the whole arm itself. I'll be up there Sunday if you...
I've never actually looked at mine but usually they are a threaded stem. This makes it so you can thread it in or out to adjust the moment of switch...