A-ha! I knew I was justified in hating LFS. I've also had my share of bad experiences (i.e. rot or being too dry) when using LFS, but obviously nothing anywhere close to as terrible as losing a specimen rajah.
Out of curiosity Phil, what are you using now? I use aged fir/pine bark, charcoal, and perlite mostly for my HL/Intermediates. Some of them are also in bark/perlite/arcillite. LLs are in 5:2:2 peat/perlite/vermiculite. The mix containing arcillite is seeming to work rather well. I've got a vieillardi in it growing like gangbusters.