I have an old crossflow 71 125 that will not stay put when tilted on the trailer for travel or when underway on the water, it will hold its own weight tilted all day though. Can I add one of those aftermarket reconditioning products without risking the unit. Also do they work as stated ie cleans internals, fixes seals, stops leaks etc. Anyone know an more targeted fix? there are no leaks at all it just goes down. Thanks even125