What's the recommended starting point?

[jamesjohnson]

I've already inquired about this locally, but I thought it would be beneficial to seek insights here as well. The discussions I've come across mainly focus on geometry and parallelism at half lift, and there seems to be a consensus that some lateral play around 0.004" is acceptable. However, I haven't found any discussions on the optimal horizontal alignment. When aiming for the initial setup, should the target be the center of the valve stem, or slightly off-center to promote valve rotation? What's the recommended starting point?