Originally posted by Honest_Gaza
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The leaking is minimizing, but I actually think it's to do with where it's locking at. I should of said earlier that with the new seal the portafilter is locking between the 4 and 5 o'clock mark. If I don't lock it there then it will start to leak.
I've read up around the place that in general the group collar itself can wear down over time, in much the same way as burrs in a grinder. This can be compensated though with a thin rubber shim which can sit behind/above the actual seal. I'm fairly confident that's what has happened here, but have no idea whether the 6910 group can handle that sort of shim. Any suggestions???
-Aaron


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