My L322 had 90k on the clock and lpg fitted (without flashlube) and is now on 140k and still fine.
I think a lot of the scare stories about weak valve seats are down to a poor lpg install.
As to LZ, I'm taking a break for a while due to one member being obnoxious when called out for telling porkies. His stock insult is calling everyone "happy amateurs" what he doesn't get is that without happy amateurs, the site will quickly become irrelevant.
Forums, by their nature, are made up mainly of said HA and without them they would not exist.
I may go back at some point but even though I haven't posted for a week, he's still banging on about it so it looks less and less likely by the day.
Shane because there are some great people there and lots of excellent knowledge.