Ok, update.
I ended up replacing parts seperately to see what would fix the issue. The infusion valve and spring was first. I thought I was on a winner as there was a crack in the washer, plus the spring was a different length to the genuine one. Alas, no joy.
The drain valve, upon inspection was also old and had a small crack the washer when I pulled it down, so I just replaced the washer and bingo, no more leak.
So the question remains, what did the service guy actually replace? I can't say as I didn't pull down the whole group head. I just concentrated on the drain side, but I was charged $40 for new group head washers and I know of at least two that were not replaced.
Needless to say, I won't be going back. I'm glad it's sorted and to be honest a part of me wants to front them about it, but what's the point?
I ended up replacing parts seperately to see what would fix the issue. The infusion valve and spring was first. I thought I was on a winner as there was a crack in the washer, plus the spring was a different length to the genuine one. Alas, no joy.
The drain valve, upon inspection was also old and had a small crack the washer when I pulled it down, so I just replaced the washer and bingo, no more leak.
So the question remains, what did the service guy actually replace? I can't say as I didn't pull down the whole group head. I just concentrated on the drain side, but I was charged $40 for new group head washers and I know of at least two that were not replaced.
Needless to say, I won't be going back. I'm glad it's sorted and to be honest a part of me wants to front them about it, but what's the point?

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