I just got mine installed last night. I used it all day today.. HEAVY as heck. (I have an ariens if you are curious) It is very hard to turn and sometimes leaves divots. The unit also bounces into its "up" position sometimes. Over all the unit is a pain in the BUT to use. On the other hand, it is leaving my lawns looking better than they ever have before. Give and take i guess. anyone else use em? Tips? Tricks? Gripes? I have chains installed on my 52" exmark wb, but it doesnt even come close to this quality. I am going to manufacture one like the one i have for my 21". Sorry eric. hehe.