HS5424, click on the "other post" link in post #16 and you will the manual link I post in that thread.
I know I guilty of that charge, Bert but if you want to serve my time I let you
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The manual I posted is directly from Briggs Power Portal that I maintain on my Google drive for my forum members of the forum that I administrate. Many of those members do not have access the Power Portal. I do have few of the latest manuals, APSI, SB, and DSB that I haven't posted to my public section but they stored in private directory on the drive. I also use One Drive for temporary manual posts. Those I usually only make available for a couple days then I delete them. Both of these drives are backups on my in house system most important files.
On the valve stems I usually file them squarely but I have also have a fine grind stone on my grinder that can grind and polish the stems. Go from zero to .011 can take time with the last couple thousandths being sneak up on.