Ran a gehl 2345 discbine for many years. $7 corn and $12 beans bought me a newer Jd 530 MOCo last fall with an impeller conditioner. Major complaint I have heard is that guys complain that it will chew up the alfalfa too much, which I believe is caused by the Impeller shroud set too close. So far I have been cutting mostly grass and have had the adjustment set about 3/4 of the way to most aggressive. Got into a field today with more alf and didn't change the setting at first. Checking the alf, I didn't see much shattering of the leaves, but also I didn't see much evidence of conditioning of the stems. Is it supposed to crack the stems or is it supposed to scrape to stems to aid in drying? What should I be looking for? Backed the adjustment off abit and sure took less power. Still have the gehl, and thought about hooking it up to another tractor and run them side by side to see any difference in drying , but haying has been such a struggle this year haven't taken time to monkey with that. Guess I'm just looking for operation tips from you guys that have run them more. I haven't looked to see which speed the impeller is running at. thanks