My Lord, thanks for the quick answer there, just before I disappear from civilisation again for a while.
So it looks like both P&W and LM are fighting a
PR campaign, or at least in (public) denial that anything much is wrong. If the pre-trenching "temporary" fix makes the engine less efficient it's hard to see how that would not affect aircraft performance (again). It would be good to see the flight envelope return to normal, whatever that may be these days.
Again, I know I may be a bit behind the times on these matters (I don't have time to get back up to speed today), but I do find the mean time between failure figures shocking. The article at your link doesn't specify what those failures are, but those do not look like good numbers for sustained operations, especially as my interest is really in the Dave B.
I wonder how many more downgrades we will see before we start taking delivery of the "operational" jets. A bloke could start to lose a bit of faith in this. I hope I'm wrong.