my scag is giving me fits---way down on power--runs about 1/2 speed from my last use of it---in already cut grass when I activate the blade pto and go to full speed it just about bogs and dies--blades new but again it does this on grass that doesnt need cutting--thought maybe fuel problem--filter not clogged--pulled carb and thought I found trash in needle/seat but upon reassembly same problem--the hydraulic level looks good as well===any ideas???