Great thread!
My 790 ALMOST killed me last month.
Had been noticing I had to really press down hard setting the parking brake & ½ the time it wouldn't catch.
Was moving some rocks, dropped a few so dumped the load in the bucket, scooted back up the hill where I lost the few rocks, set the brake, hopped off & for whatever reason (6th sense) turned to see the tractor starting to roll.
Hopped on, (AMAZING "how fast" they pick up speed) trying to get my leg over the shirter & the scaper blade I had on for counter weight dug in & tossed me onto the gravel driveway (cracking a rib or 2, I'm sure) knocking the wind completely out of me, road rash for sure only to look up & see Deere Johnny leaning but held up by the ditch.
I'm going to look & see if the adjustment is more or less the same on my tractor.
Thanks for the info!