Already checked and replaced when Mark brought it up the other week as I'd noticed something wasn't right when I fit the Abbott intercooler - replaced too late though!
Can't say for sure when they were broken and not replaced on mine so can't point fingers. Also the 3" downpipe leaves little room and I had to add a second cable tie to the offside to pull the AC hose away sufficiently.
I don't think it's had a major leak until today when the pipe bust about 20 mins into the garage pressurising the system, it's just not been recharged for a long time and steadily got worse over the 3 years I've owned it.
I've ordered the pipe, o-rings and screws from Bill today and actually managed to get it booked in with Joe next Wednesday, as I just don't have any spare time to DIY at the moment. Question is - can I get away without replacing the dryer? They seem to be rather pricey from Orio..