I posted here earlier about a gravely promaster 30H front mower that I just bought,Well the rain fianally stopped and I cut my first yard with it,about 2 acres on a slight slope.I wasnt too impressed,this property is slightly sloped and I used to cut it with a 48" 14hp metro and a velke,it took awhile,but the metro pulled me along just fine.I am a fairly big guy and was always impressed the metro could haul me around without any problems,Anyway the gravely had a very hard time on the smallest of inclines!!!The tires werent spinning it just wouldnt go anymore,and I would have to reverse and get a running start or choose another path,Given it is 2WD,but is has a 30HP diesel,The engine is running fine,all fluids and filters are OK.It must be the transmission,cause when it starts to loose power,it starts making a loud (trying hard) noise,but that noise is common on most hydraulic drive systems,isnt it? I remember helping a guy years ago that had a Kubota F2400 front mower with 4x4,and it got stuck in a fairly easy spot,but his tires were spinning,just couldnt get traction.Anybody have any suggestions? I always thought these mowers were unstoppable,Exmark would love to hear a 14 hp metro outpowers a Gravely 30hp diesel!!!!!Thanks for any help. Mike K.