After about 2years and 400 plus face cord of hard maple,beech ,yellow birch etc,the only issues i have w/my 25hh is the 4way wedge will start to bend.If you watch while splitting twisty wood you can see the whole wedge flexing as the ram pushes wood thru the wedge.American does not recomend useing the 4way with twisty wood. I suppose something has to give and the 4way is weakest link. To rectify this ocasionly i grind the 4way flat. Eventually it will have to be replaced but that is to be expected. I highly recomend this splitter .I have a 25hh with log lift ,4way ,36" ram , briggs engine.Picked it up the day they finised building it and put it right to work.Top notch local people that manufacture them.