Lifter preload...more or less?

At 7.375 there is no preload. I was thinking adjustable rockers but am really not interested aside from new pushrods spending extra money at this point. I also thought of a little longer pushrods and shims, but it's too complicated. My springs are considered an upgrade/stonger. Keeping that in mind I'm back to new push rods, one gives .0250, the other 0.050 preload. I also as a carpenter find it hard to believe that 1/16 - 1/8 makes that much of a difference.