I had this group re-do the rockers on my '74 TR-6. The car was a complete
frame-off restoration, including extensive engine work. The car has been on
the road for just over a year and about 3,500 miles; it's also a daily driver.
Just checked valve lash this past weekend - almost no adjustment necessary. I
also was curious of any wear on the rocker tips, so I pulled off the rocker
assembly and checked. Visually I can see no wear on the rocker tips or on the
valve stems, so far. Maybe my external top-end oil feed kit helps (hope we
don't start that up again!).
All in all, I am very pleased with the work and cost. I'd do it again.