Set planter transmission for 31,744; but monitor varies anywhere from 32,400 to 34,200. {some of this, I believe, is my GPS mph signal varies}

 I see 33,300 quite often, when planting.

Trying for 32,000 final stand.

(note: John Deere 7200 operators manual mentioned that seeding charts are "assuming" roughly a 15% slippage, In the drive system)

So, if I add 5% to 31,744(transmission setting) = 33,331 = pretty close to actual population, on monitor ( = that must mean I'm roughly getting 10% slippage, I guess)