i bought this used hoist a couple of weeks ago. it worked at the time. turned it on it's end loading it on a trailer and some of the fluid ran out. then today pulled engine around with the wrecker and the hoist/ cherry picker won't lift it to get of the wrecker. :mad: added fluid thought maybe some air in there. it will lift but not enought to raise arm. any suggerstions? i would like to start using this thing. rassled with the engine all day. had to change out oil pan and gasket, but i want to get started on fab'n the motor perches. thanks, hr