Adjusting the valves, quick and short questions., NOW I need help on timing !!!! PLEASE Options

[913B]

I am checking the valves because they seem noisy and also to track down an erratic idle
I have read the rocking method but I would like to stick with the dizzy and TDC method please.

I read cyl #1 & #3 has same TDC and #2 & #4 has same TDC

Question 1 – Setting TDC on the fan notch does it have to be at “0” or will the notch for “27BTDC” work too

When I find TDC for #1 on fan notch and dizzy rotor is pointing to #1 tower of dizzy cap

Question 2 - Can I adjust all the valves for #1 and #3 cyl ??
Then rotating the motor to #2 TDC on fan notch and dizzy is pointing to #2 tower

Question 3. Can I adjust all the valves for #2 and #4 cyl ??

Question 4. Is it wise to replace the cork valve cover and not risk a leak.
The gasket is pretty new though and low mileage since I last had them off.
I am thinking of purchasing the 914rubber re-usable ones. Any recommendation’s

Thanks everyone !
Ted

[r_towle]

The camshaft shares the same lobe for the two valves on opposite sides of the motor.
forget TDC, forget where the distributor is, forget marking the flywheel.

Get under the motor, take off the valve covers on both sides.
intakes are nearest the middle of the motor.

When the intake valve on the rear of the motor on the drivers side is all the way open, which you can see, which you can rock back and forth to verify its all the way open, go to the intake valve on the rear of the motor on the passenger side and adjust it.

This method is the easiest to understand and foolproof.
Replace the valve cover gasket each time y adjust the valves .
I used a light amount of gasket sealer on the valve cover to keep it straight because they do get pushed around a bit when you put the bail back on, and they can sometimes get out of place enough to to leak.....lots.

The VW logo on the valve cover goes on upside down.