Good moring everyone I need some help please . my spliter runs slow strokes 17 sec and will not split knotty peice soft maple I ajusted vavle and it help but will do no more then what it does.I have a 5.5 hp briggs and 11 gpm pump and on the vavle ? why I have said all this is my brother has a harbor freight log splter and it goes right thur these peices his has 6.5 hp ? on pump no label and ? on the vavle. what is a good setup to have pump verse vavle any help please thank you very much.