My hiccup(s) were certainly a mixture of causes, but the TPS was a big contributor. I could not detect it watching the change in millivoltage, but could see the *jump* in Ohms (milliOhms?) with the TPS unhooked and looking simply at the change in resistance.
In my case, the CO Fuel Trim at - (minus) 27 was a factor, as was the corroded right coil connection.
At this point, I feel confident that all the effort to service and treat the connections, switches and relays throughout has been helpful, while nonspecific. Electrically, other than using High Current Relays, the Ignition Switch is worth cleaning, inspecting and servicing (Vaseline® or, better: Caig DeOxit$).
The simple stuff would be open the air screws to a full turn, increase the idle to a true 1250 +/-, and use high quality fuel (either a zero ethanol premium or Shell Premium V-Power Ntro+).