I got some issues with my splitter.. Got some 18 inch white oak that it will hardly split.. Most of the time it will split them in half.. But when it hits the 4 way all progress stops.. The motor starts lugging like it's going to stall out.. I can back the ram all the way back.. Drop in a 6 inch block between the ram and my piece of wood and it will have enough power to push on through.. ?? Can't figure out why the further out the ram is the less power it has.. Oil level is good.. And my hydraulic chainsaw that I have plumbed into the system still cuts as strong as ever..