I read a post that said that the late '80 and early '90 vro runs @ 1:100 @ idle. And that Evinrude changed this back to 1:50 on their later models.<br /><br />now I have '88 120HP 'Rude(BE120TLCCA, G1738847) And I found these numbers on the back of the pump(the part that looks like a flat horn)...