Date registered: Jun 2005
Vehicle: 72 250 M130 W114
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RE: 114 Carbs.
Sounds like you're running at 4' ATDC with the vacuum advance on. So your timing is way off way off.
The way I have mine setup is, since the emission stuff is broken and I only have 1 vacuum line working, I put the vacuum on the retard (lower) and set the timing to 4' ATDC then move the vacuum line to the advance side.
Your RPM's will go up to about 2k, you can lower is as much as possible with the idle adjustment nuts.
It will run properly this way until you get the switch fixed. And you won't need to readjust it when you do put in that switch.