Miss and carb tuning troubleshooting

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A5) Yes, it has a functioning PCV valve, a little noisy though, but I have replaced it 2 times and still the same. Hose isn't collapsed either.

A6) No, tdc mark has not been proven, could explain how the car is running how it is if the damper has slipped.

A7) Mixture screws still work fine. Turning in leans idle afr, turning out richens.

A8) Secondaries seem to be fully closed, will confirm later today.

A9) Compression and leak down test will be done this weekend. I'll post the results. Thanks again.

*Edit* Cold start idle at 950 and only drops to 800 in gear while brake is applied, warm same 'ol 650.