Delighted to read that all the expensive machines leak. If the R22's I fly don't leak, I take them back.
One I took up in the US with no doors - it had leaked so much over the years that the carpet had been secretly rotting. Got across the wind and suddenly the cockpit was full of flying fibres and tiny balls of rubber. Couldn't see a bloomin' thing.
The deep joy of the 22 is that it leaks both sides - so a plentiful supply of inflight thirst-quenching for both seats on long days.