Hi Bo, I'm no tiller expert, but I do play one on tv /w3tcompact/icons/wink.gif. Last summer when I first got my tiller I set it so it would only till a couple of inches deep on the first pass. This was on a field that had not been broke in several years and was grown up in weeds and had only been bush hogged. Second pass was full depth. I have tilled with the tiller set at maximum depth on the first pass, just had to go slower; my 25hp Jinma could handle it, but I think it was mighty hard on the clutch. This tilling was done with a 58" tiller, by the way. Just get out there and experiment with different settings and different tractor speeds. Tractor size, tractor speed, tiller size, soil type, soil condition, whether soil has been recently worked, are all factors that have to be taken into consideration. One thing to keep in mind though, is it ain't rocket science, just get out there and play with your tiller; it won't take you long to figure it out. /w3tcompact/icons/grin.gif