I'm new to the deere planters. We have a db 60 24r-30 EE. I've always had a Great Plains and theirs are way different with the vac. When the deere rep came out he had us set the vac for the seed plates at 25.We are running a 99.3% singulation which I think is pretty good. Is there a better cheat sheet guide than the manual for what the vac should be for seed size? Also I know feild conditions determine all of it but what do most of you run for hyd down force? This spring sure has been a challenging one.