Hi Converse, the top and bottom seals had no signs of leakage, however the inlet o-ring did have a slight age hardened spot and I would have replaced it if I could have found the ziplock with the o-rings in it. I found it this morning (I sorted 5 large boxes of spares last month and sorted them so well I couldn't remember where it was.)

I am out working on my Sunbeam Lawnkeeper 160 since I am enthused to get it going now - piston is buggered (lots of play around the gudgeon) so am swapping in another