Valve Adjustment Question(s), This task feels more like an art than a science. Options

[DC_neun_vierzehn]

I'm still a newbee on valve adjustments. I have a 73 2.0 (2056).

I've watched Ian's video a dozen or more times. His engine is on a stand the heads are vertical. My engine is in my car so my heads are horizontal. I'm trying to get a feel for how much drag my feeler gauge should have between the valve adjuster screw and the valve stem.

Should the feeler gauge be able to drop through the gap without forcing it through the gap?

Or should it be able to pass through the gap if pushed, but stay "stuck" in the gap without being pushed?

Should there be any bend in the feller gauge to push it through?

[Chad911sc]

It should be able to pass through the gap with minimal effort, no binding. Should just feel the drag of both opposing sides.

[DC_neun_vierzehn]

It should be able to pass through the gap with minimal effort, no binding. Should just feel the drag of both opposing sides.

@Chad911sc That's helpful. Thank you.

However, I would still like this question answered to get more precise with the adjustments:

If I'm lying on my back under the car and I place the feeler gauge in the gap and let go, should it fall through OR stay in the gap because it's touching both the valve adjuster screw on one side and the valve stem on the other?