Had a similar problem on mine and fixed the angle the post was coming up and that fixed it. Just disconnected the screws on the solenoid, and retightened them after angling the post better. Good luck!

The hold on any coil is not enough to pull anything up from rest. If it holds in gameplay your fine.
The metal tab on the left most likely needs to be bent back towards the middle of the entrance of the POA.
Also if your machine is leaning left the ball will roll too fast to drop on to the POA.

Check it in 'solenoid test', does firing the 'diverter hold' coil also fires the 'post hold' coil every time? (It's not supposed to.) You might have to give the post a little push down, and see if it stays down, just in case the hold is not strong enough to make it move on it's own. If they move at the same time, I'd start looking where the post hold coil's drive wiring is shorted to the diverter hold's.

If it works in the test, then my next guess would be the game marking the mini playfield motor/opto as broken, and it doesn't want to send the ball over there. To check that, select 'mini pf. test', and if at the beginning it says "Mini pf. motor and switches are working", then it's not the problem you're looking for.

I went over today to at least poke around and see what I could find. I took a few notes.

*Path of Adventure motor is failing the test. When I went to test the path optos that see when it tilts all the way left and right, those won't register. Tried putting a small screwdriver through to break the beam and neither one triggered.

*I removed the connector and measured the 12V and the voltage is good. I did not remove the board as i could not get to the screws without taking off the path and was not able to do that yesterday. Does that opto board also power the motor? I measured the lugs of the motor and it was giving me a few mV, not 12V as I was guessing might be there.

Then there are some other things I noticed. Pretty sure I can fix most of these, but will list them.

1. "A" target won't register, but something else was awarding that when I played a few test games. So the Path will be available, which is bypassed because it fails the test at startup.

2. Bottom left Path switch triggers itself, "D" and "V". They are on the same column, so I'm guessing it's a diode. Curious why it's triggering 2 extra switches instead of just one.

3. "Raise Jackpot" (or "center standup" in the switch matrix table) switch triggers the left sling and "exit idol" switches. Again, guessing it's a diode, but curious why it's triggering two instead of one.

4. Switch 9-7 is active in the switch test, yet it doesn't exist on the matrix. Not sure what that is.

5. If you bump the left ramp hard enough (slightly more than a tap) the opto for the entrance for that ramp registers. Found this out while working on the path and it kept triggering "left ramp entrance". I was curious if there was another bad diode, but eventually found that I was bumping it while working on the path. Seems a little sensitive to me, but didn't seem to do anything negative during an actual game.

Does the Path motor always have power like coils do? The optos might be an issue on the opto board, but the motor not working at all is likely a separate issue that I'll take any tips on how to track the issue.