On Love & War, #218, I have just discovered a leak in the rear engine seal (Yanmar 2QM15). I will have to remove the engine to replace the seal, and this would seem to be the time to replace or upgrade the stuffing box for the prop shaft. The present fittings are presumably the original, and there is a slightly accelerated leak recently. I can probably slow it with a small turn of the nut, but would like suggestions regarding the newer alternatives.