Simon asked me for an up-to-date zip of the lemforum pack, which I've attached. There are two levels for which I don't have up-to-date versions:
Won't Get Fooled Again: I believe lowering the lix count on this level has been suggested, but I don't know the details.
We're in This One Together: I believe redesigning this level has been suggested, but as I haven't solved it, I haven't been following closely.
I've also attached my replay for the current Slipping Again. Let me know if there are any other levels that need new replays.