Enginge cutting out - running rich, The investigation continues Options

[dralf]

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Last night I bought a vacuum tested and continued my investigations into why my engine kept cutting out and running rich during my drive home from Columbus.
I checked the MPS, and was worried it might be toast; however I think I am OK. From an initial vacuum of 20 it looses 2 inches in about a minute and 5 in about 5 minutes. I am still waiting for my new CHT sensor but the one in the car reads 2000 OHMS at room tem and about 450 at operating temps. I think these readings are normal.

I then started to dig into the hoses. When my problem started during my drive I initially looked for obvious cracks or hoses loose and did not find any smoking gun, however, last night as I took the air cleaner off, I noticed the two hoses going to the decelerator valve were transposed. Also one of the other lines seemed to have a loose fit ( have a picture )

I also had some questions that perhaps you guys might help me with. This may sound stupid but I looked and looked and did not see a PCV valve, where is it ? Also I have seen a few hose lay outs but none are for a 1975, and I am wondering if it is slightly different. Are there any good hose schematics ? I have the one from PP.

I noticed that the PO appears to have put RTV all around the base of the throttle body, yet it appears to be one solid piece, was he just nuts ? I have enclosed a pic of this.

Lastly I also took the throttle positioner sensor apart, I can see why I was getting a hesitation at 3000 RPM, but as some of you indicated, this should not cause the engine to run rich or cut out.