water in the oil???

[Graeme Smith]

Not the liners it was the aluminium between the liners it sometimes cracks across that narrow bridge, also the O ring that is at the bottom of the barrels needs to seal against the liners, and the top of the case and that requires it to compress and fill the machined groove, so the groove is machined square and the O ring is round so the squish of the O ring does not fill the square machining so silicon is added and that amount of silicon is critical not enough and the gaps will not seal, too much and it will also squish out and the brand and quality of the silicon is extremely important, get either of those wrong and it probably will leak.