I'm not trying to be argumentative. Do what you want with your car, if it works for you and you are happy that's good. I'm glad you are posting the methods you've used, but I think it is imprudent to state potentially harmful methods without also discussing the approved or more generally accepted methods.

Obviously you aren't going to pull your head. (Unless it starts to leak again....) But using paper instead of a $5 set of feeler blades is just plain foolish. And without a set of feeler gauges one really can't know what their head's flatness is.

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1987 W201 190D