[Excaliber]

That looks real interesting all right, I wonder if that will make the difference and get the motor to "live" past the 10,000 mile mark (8,000 in my case).

Still, correct lash adjustment will be critical here, NOT something to take for granted. A flat tappet can be out a little bit, not good but not terrible. With a solid roller even a little bit out of adjustment coud be a disaster.