draft is locked off like it has been for years theres no turn knob, this started being a problem once in a while about 6 months ago leave it run a hhile and it would start working again, but this time it never started again. changed the fluid,poped the top pretty simple system raise handle pushes and pulls a plunger,from there you cant tell the f[uid routing because its all in a cast housing. on the front of this housing there is a plug right in front of the plunger, it has oil pressure, just above it is a spring loaded needle valve it has oil pressure just to the right is a spring loaded needle valve and this one has no oil pressure,the one with no oil pressure is the onemoving towards the cylinder that would raise the 3 point