How do most of you guys run your rear axle? In the top two holes, which is the lower position, or the bottom two holes, which is the raised position? I've run my 9650STS 2wd in the lowered position since I got it 4 years ago. Never thought about changing it, since it sits just about level front to rear. However, was thinking that I might want to drop it to the raised position, as it might help the chaffer and sieve to claim a little more grain with the crop traveling 'slightly' uphill. There's a 2-1/2" difference at the axle. Don't know how many degrees that is or if, in the real world, that'll be enough of a change to make any difference. What say ye? Thanx in advance.