Well about the secondary filter, I'm glad I was mistaken, since that would mean the lack of the pre filter was giving the inj. pump dirty fuel. Creating a false fuel tank is a great idea. I just got a couple cans of LM diesel purge, so I have to do that anyway.

I did use a multimeter a a while back to test my relay, and all the connections at the plugs, but since then the relay has done some weird things. Like a few months ago, my glow plug indicator light was blinking, and after giving the relay a little smack it clicked on. It did this a few times, but has not happened in a while. It would be a good idea to test the system again.