This may seem counter-intuitive, but air in this case is the problem, so filling it less introduces more air (which is compressible) versus liquids which are generally incompressible.
But OP mentioned the bottles they use are not great so the problem they face may really be about getting better containers.
This tire-blown incidence was caused by a rather large piece of metal FOD from a previous aircraft departures. Some engine strap as I recall. The strap was laying on its side and basically sliced the tire as it rolled over. The resulting debris field punctured the fuel tank, damaged an engine, and flames worked their way up until structural failure caused the plane to crash.
Wait until you hear about pickling. A number of military aircraft at the “boneyard” At Davis-Monthan AFB are still suitable for service; their engines having been removed and pickled within a special crate beside the aircraft.
Marine desalination systems are pickled between extended periods of non-use.
I’ve used
rsyncin the past, it’s quite nice, very fast. I don’t know that it will work for you, but I was surprised to learn it existed.