74 2.0L, bizarre behavior Options

[Java2570]

I'm back with more questions re: my 1974 2.0L. Since replacing my distributor contact plate (bad ground wire) I've had issues with how the car runs and idles. Currently, I've put back in the old contact plate and tried to back track through every thing I've taken
apart, etc. I have replaced the intake runner boots and gaskets also. I just replaced the AAR valve with a known good one. As of today, the car will start and seem fine for about 1-2 minutes, then it starts running rougher and dies altogether. When I attempt to restart it, it refuses to start, like it's flooded. What I at first thought was a lean mixture problem now appears to be a rich mixture issue. I forgot to mention that I've also replaced the CHT sensor with a new one from PP, it's a 012. I am only getting a reading of about 1.3K cold (sensor alone) and about 1.8K cold with the ballast resistor that came with the wiring. I know that is lower than it should be.... I haven't been able to get the car warmed up enough to check the warm temp resistance.
I checked my MPS today and it seems to hold vacuum but I've not checked the unit
with a meter yet. Can I do this without testing through the harness via ECU? Would a bad MPS cause a scenario such as I'm having? I have also wondered if the injector seals are leaking vacuum; I see no problem with fuel leakage anywhere. I did find a couple of bad wire connectors today so perhaps in all my messing with the dizzy, I caused an issue with a wire. Prior to all of this, the car was actually running pretty well and it didn't seem to have a major issue save for a few slight vacuum leaks with hoses. Sorry if this is long winded and perhaps hard to follow but am I missing anything that could be an issue? I really thought it was either the AAR or CHT that was causing my running problems but now I've seemed to have made it worse and it's driving me crazy!! Any other ideas? Thanks!