remwmber that all pairs of lifters for a cylinder are seperated by a lifter from the other bank. [/quote]

Greg that is true but it still won't help counteract any flex in the rocker shaft. On a set of paired rockers it may make little or no difference. I believe the first time I read that it was on here from Monte Smith, I then checked my rockers to see what it did. I don't recall the number but it was pretty surprising when I checked it with my Erson W2 rockers, however the Erson Rockers had a dinky shaft that was almost floppy compared to the Harland Sharp rockers I run now. [/quote]
My thinking is all related to cam flex since i run Jesel paired rockers that are individually supported by two bolts each, the center one being shared. Flex in a common rocker shaft is another can of worms i assume.