Hey Sparky!!, We was going great guns until we got tripped up by the rains, yesterday (Friday) we hauled in the wagons we had filled up before the rain and they all were dry. On the last load we ran brought a sample over that we just run and it tested 14 on moisture, so we ran the 77 and 6620 from 5 until 9 pm yesterday - the seed tested 16 on moisture and was in my opinion "crappy" - had low bu. wt. and was weedy. The 7700 is the one putting straw in the tank - i'm having straw fall thru the walkers and come down and hairpin thru the chaffer, I already blocked part of the front off but the problem still exixts. The cyl speed is at 600 and concave at 4, from this point, the more cyl speed or less concave space will shred the straw too much. I don't plug the fan on either machine, the 6620 fan is running around 440 rpm and is losing very little if any seed while turning in an excellent sample, the 7700 is in the same speed range, so far i've been hesitant to open the shoe up and turn the fan up and see if the airfoil will work. Dad's 6601 is OK, it's easy to work on but parts are hard to find if you need something other than chains and bearings, I put a lot of work into fixing it after we got it, the last owner was apparently a dip, because it wasn't taken care of or maintained. For today we're going to start after the dew is off and see how things go, I hope to get around 80 to 100 ac done. later, 95man