Welcome to the Ford Six forums TNcowboy, that's a very nice Bronco and I can really appreciate and enjoy seeing these older Fords looking stock right down to parts & engine colors, so am glad that your wanting to keep it all factory stock. If that's your goal then there isn't any reason not to keep all the LOM system parts, when working properly and tuned correctly they are quite dependable as well as giving good performance for a stock engine. There is lots of trouble with the condesors and points sets sold so look for top quality ones if you change back I usally use the NAPA Echlin (they have really good Caps, Rotors, and wire sets too), or Motorcraft are also decent. I noticed in your beginning post that that your vacuum gauge reading was good but you said its not steady this can indicate an engine with uneven compression or a sticking valve. Good that your going to do a compression test and I am leaning in that direction that your going to find out this is were the problem is. Don't think that your 1967 Bronco still has the adjustable rocker arms and solid lifters (some models such as Econolines, Ranchero's, and I think the Broncos with 170's did after 1964 to 1966) but if it is a very early build it might be possable then I would check that the valve clearance is right. Other wise you are probably in for pulling the head and doing an inspection, plus valve job.
4 1/2 psi fuel pressure should work ok, yet depending on the wear of parts the float level may need to be reset so it's a little higher than stock setting try 1/16 inch so fuel level is lower. There could also be be a Vacuum leak or leaks. A bad or incorrect PCV valve. Power valve still may not operating correctly. Another thing to consider later on during hotter weather is a fuel filter change so that excessive fuel can be returned to the fuel tank plus keep the fuel from boiling over in the fuel bowl and flooding the engine.
Below are all the video's I could find showing how to rebuild the Autolite 1100 carb and doing all it's bench settings plus trouble shooting their problems. They are a favorite carb of mine that can deliver great fuel economy and excellent Durabity. Check out some the appropriate carb videos below for info you might need, It's not that hard to pull the carb top off on the vechical but if your more comfortable doing it off the car then pull the carb. Also check if your Pertronix Ignitor gas the correct .030 gap set. There are also some later parts that can be swapped such as the 1968 to 1974 points distribtor, together with the 1968 Autolite 1100 (last year they made an Autolite carb) that would give a little better performance yet look totally stock to all but an expert. Good luck
Complete set of Autolite 1100 Carb rebuild, adjustments, and also carb trouble shooting, video's
Autolite 1100 Part 1 Carb Teardown
https://m.youtube.com/watch?v=eAirfexkMVY
Testing a Brass Float Assembly
https://m.youtube.com/watch?v=wPGC5hp-RVg
Autolite 1100 Carb Rebuild Part 2 Float Assembly, Needle and Seat
https://m.youtube.com/watch?v=8bgc21iYKyY
Autolite 1100 Carb Part 3 Rebuild of the Float Bowl Assembly
https://m.youtube.com/watch?v=96wm8kcTAYI
Autolite 1100 Carb Check ball placement
https://m.youtube.com/watch?v=uiOG__H2BM8
Autolite 1100 Carb Power Valve Repair
https://m.youtube.com/watch?v=R8XilvWkP3k
Autolite 1100 Idle Circuit
https://m.youtube.com/watch?v=M_HxIZTi6Do
Autolite 1100 Carb Power Valve
https://m.youtube.com/watch?v=i2eWyUbCtJU
Autolite 1100 Carb Accelerator Pump and How it Works
https://m.youtube.com/watch?v=1yp6SABzVG8
Autolite 1100 Premium Carb Kit Parts PK111
https://m.youtube.com/watch?v=BMMwVjVKbbg
Autolite 1100 Carb Kit parts
https://m.youtube.com/watch?v=ikZs5Nd9joE
Autolite 1100 Carb Kit 436
https://m.youtube.com/watch?v=n8L2RfnG_90
Autolite 1100 Carb Flooding and Trouble Shooting
https://m.youtube.com/watch?v=QrvsdDucIXE
Autolite 1100 Carb On Bench settings
https://m.youtube.com/watch?v=fVbZ1W1oNxA
Autolite 1100 Carb Settings
http://www.carburetor-parts.com/Autolit ... p_416.html
Autolite 1100 Carb Vent Rod Adjustment
https://m.youtube.com/watch?v=uiOG__H2BM8
Autolite 1100 Carb Choke Thermostat
https://m.youtube.com/watch?v=A9Tkb_hTlRI
Autolite 1100 Carb Choke settings
https://m.youtube.com/watch?v=ZaDyq137YGI
Autolite 1100 Electric Choke conversion kit available from V.I.
https://www.vintageinlines.com/product- ... -choke-kit
New Universal Replacement Carb (these are available from V.I.) for the Autolite 1100
https://m.youtube.com/watch?v=UFRPh_TsluQ