Quote Originally Posted by Henry Rifle
Randy, No offense, but I don't use that method any more. It works fine for mild cams, but it can cause adjustment problems with others.

Jimmy, you're getting slop because the lifters aren't pumped up.

I set the rockers one-by-one.

- Remove the spark plugs - it makes the engine easier to turn over.
- Loosen all the adjustment nuts.
- Turn the engine over until an exhaust valve pushrood starts to move up, then set the intake.
- Turn the engine over until the intake valve you just set is nearly closed, then set the exhaust valve.

- Repeat seven more times.

It's a lot of engine turning, but it guarantees an accurate lash.

This is a good link.
Read what Jack says here.
This I.M.O. is the only way to set them correctly.