I have a 863 c with the duetch diesel it was all around weak when I bought it but it worked ok, I recently had the whole pump rebuild and now the wheels have tons of power but the bucket up down and curl are still kinda slow and doesn't seem to have alot of power it will still pick up a bucket of dirt but it wont lift anything heavy I was told that machine should lift the back of truck and it wont . it just stops, the motor doesn't bog or anything it just wont pick it up I would think it should at least lift its own *** off the ground but it wont, the previous owner said bobcat rebuilt the control valve, is there any thing im missing.