[AlanM]

Did another one yesterday, in about 3 1/2 hours.

Where I'm getting faster is heating up the bolt. I don't stop and check anywhere near as often. Also have the heat gun set at 500'C. Get the bolt to about 120'C and off she comes.

And I didn't need to refer to YouTube at all!
Replaced the top engine mount too, and what a difference that made! If the bonnet vibrates at idle you probably need a new engine mount!