Originally Posted by ATVer
Upon reviewing the diagrams on the Big Foot website it looks like the piston inside the ram is held on the shaft by a nut at the top. If that nut backed off or the top of the shaft above the piston fractured somehow it would act as a stop like you are experiencing. Not sure how this could happen unless there was some manufacturing defect.
I mentioned this to Quadra tech. support and they didn't think it was possible for the top lock but to back off since it is a lock nut - the same as used to hold the pad.
May soon be a dealer fix. I have a temporary fix while on my trip.