QUOTE(malcolm2 @ Jun 26 2020, 11:55 AM)
QUOTE(Mark Henry @ Jun 26 2020, 10:49 AM)
Don't worry about the lift vs the card.
Instead worry about getting the geometry correct.
I take more than .060 off and the champher countersink
Cool. That is the direction I was heading. Don't really have much choice otherwise.
Take the .060 off the smallest rocker then match the rest.
After a generous countersink it won't look like much thread left, maybe less than a 1/4", but it's never been an issue.
To get very little shim you only have the screw about 1-1/2 turns in, that's why you need a generous countersink and thus you have a lot of thread sticking out the top.
If you need reassurance it's how Raby does them.
The geometry... well I see some of the threads and giggle at all the complication
At one half of measured lift the the adjuster screw should be in line with the valve stem. The rock (degrees) of the swivel foot from open to close should be equal. That's about all you need to know.
Just an FYI If you have well machined heads, like Len's, then all the valve stems are equal, if you start into needing different lengths of PR there's something wrong with the head machining and/or case deck.